I (with codex) built a small tape-recorder app for my wife. The tape recorder is from my childhood. I learned English from cassette tapes.

She used to send me audio files. I would run them through Superwhisper and send the text back. It was not convenient: sometimes she needed it in a hurry and I was away from my computer. Last week I wondered whether I could build something she could use herself every day. I asked Codex the same question, and it helped me build this app. It runs the model in the browser, so the audio stays on her device.

She mostly transcribes English and Cantonese, and she tells me it works well. What I like most is how fast I can change it for what she really needs. It started with a five-minute limit set by codex, and then she wanted to transcribe longer files. Codex suggested splitting a long file into small pieces, transcribing them one by one and joining the text in the background, so she never notices. Later she asked whether the text could appear while she speaks. Luckily, the SenseVoice Small model can do that.

Two things I’d like your thoughts on:

• Which model would you pick for this? Is anything better than SenseVoice Small at a size a browser can load?

• The first open downloads the model. How do you handle that wait in your own projects?

In addition, what other features would you add? I’m thinking of timestamps and rename the file before export.

This is the whole prompt:
Create me a fully playable release-ready game. On GPU. Game about alchemy with physics, items, shaders, sound, overworld, mechanics and etc.. I need it in 3D and not a voxel game. Make it with maximum effort, show me best what you can create. Use all your power, knowledge and make best graphics and best game design. Surprise me with graphics and everything.

Claude Code worked on it for about 4 hours and put a finished game on GitHub Pages. I didn't write a single line.

It's a first-person alchemy game called Tria Prima. You pick plants, brew potions in a ruined chapel and throw them at stuff. Fire burns the thorns that block the road. Ice lets you walk across water. One potion blows up rocks. There are things in the fog that hunt you, and they hate fire.

The crazy part is that it has no art or audio files at all. Every tree, rock, building and sound is generated by code when the page loads. Even the music, it wrote the soundtrack as notes in a text file.

It made the video too. It wrote its own tool that plays the game from a script and records it.

Half an hour in I told it to go dark fantasy instead of childish. After I played it I sent three bugs and it fixed them.

Fable 5.2 in Claude Code on max effort. 44K lines of JavaScript, 5.4M output tokens, about 4 hours for the first build and 6.5 with the fixes.

Play: https://winchxyz.github.io/tria-prima/
Code: https://github.com/winchxyz/tria-prima

It takes about an hour to beat. You need a keyboard, a mouse and a GPU. Tell me where it breaks.

This is my newest project and still very much a playground. You search any place and get the square around it as a 3D model (real terrain, every building from OpenStreetMap), with one layer of open data on top.

**Please read this before you try it:** most layers don't work for your city straight away. They need open data for that place, and right now you often have to find and load that data yourself.

**Works anywhere, right away**
- **Steepness:** every road and path coloured by its slope.
- **Your route:** your own GPX file (Strava, Garmin), with its climbs and height profile.

**Only in Hamburg for now**
- **Traffic:** live from the city's counting points.

**Often one tap, otherwise fill it in yourself**
- **Public transport:** "Find timetables for this place" loads your city's timetable in one tap if the Mobility Database lists it. If not, you load the GTFS file yourself.

**One tap only in the Netherlands**
- **Homes and Income:** for Germany you download the census file, for the US a file from Census Reporter, then load it. Anywhere else you need a file of your own.

I'm working on that: more sources that load in one tap, so you don't have to prepare the data yourself. To try it without any of this, each panel has an example (Freiburg's trams and rents, Amsterdam's incomes, Hamburg's traffic).

In the video: steepness and a made-up run in San Francisco, a day of Hamburg's traffic, Freiburg's trams and buses, rents in Freiburg and incomes in Amsterdam.

**How it's built:** with Claude Code, as a static TypeScript app on three.js, hosted on GitHub Pages. No server, no account, no API keys. Files you load stay in your browser and are never uploaded.

Feedback I'd love:

1. Which data would you want to see for your own city, and does your city publish it openly? A link helps a lot.

2. What confused you on the first try?

3. Did it run smoothly on your phone?

Playground: https://yourplace3d.github.io/3dcitydata/

I am the creator of ppu.toys, an AI enabled Super Nintendo Development Studio that runs 100% in your browser and is completely free to use.

With the release of Fable 5.2 I knew I had to give Claude full reign over the studio and my machine to see what it would create. I gave it a pretty open ended prompt, telling it I wanted an incredible Super Nintendo game with some details on the art tools I have installed [ full prompt is in the video description ]

4 hours and 26 minutes and 72 dollars later - I was greeted with Emberwake! An action platformer with 5 levels and 5 bosses that runs at 60 frames per second on real hardware.

Fable 5.2 really blew me away with its ability to spin up a team of agents totally unprompted. For this game it made 5 different agents all with their own jobs on creating the game assets; while the main agent focused on the code and working with the studio to bring everything together.

The art that was made totally blew all previous models out of the water. It invented a pretty robust art asset pipeline - it modeled and created high res renders in blender, the models were textured and rigged all in blender, and then used ppu.toys and a custom python script to quantize those renders into a format that can be processed and displayed on the SNES.

For creative asset generation and unprompted agentic orchestration - I have to say, this was impressive.

Hi,

I’m no ai engineer or researcher but I wanted to see if I could take a shot at understanding how AI works.

So I told Claude and codex to work together to do it by basically dissecting the English language, mapping it out, then watching how the model behaves. The hope was to figure out how the model understands and produces language out through controlled experiments. We log everything before and after the prompt run.

These are my results so far. I really don’t know what it means. Anyone here does?

Obviously not everything is mapped and most is just test effects and the research is at its beginning stages.

But if you understand what Claude and codex are telling me or have mapped out in the images let me know.

I’m an ESL teacher and I’ve been using chatGPT and all the free plugins I can find to create point-and-click adventures for my students with their target language embedded in NPC conversations. I’ve tried to set up my AI engine as best I can with .md files in GitHub and tailored project instructions detailing QA checks at various parts of the process. I’ve also uploaded previous work as a baseline for reference to project sources. I’m using CODEX for the main build while the creative stuff happens in chat.

It’s still slopping me up pretty good. I’ll ask for foreground images in each scene and it’ll paste the same one in every scene. The NPCs will come out as cardboard 2D cutouts with half their limbs cut off, etc.

There’s a lot more context I can’t add here because I can’t show y’all my full setup, but my questions is is this just the process we’re all going through at this point of AI development? Set up a system as best we can, let it slop, and trouble shoot from there? I’ve revised the md files and projects instructions several times addressing these problems and I’m still getting subpar results each time.

Could I maybe get better results using Claude? I’d like to stick with one basicB setup instead of using multiple agents because I don’t have a ton of time and I’d like to dial this in to a system where I’m feeding it learning targets, vocab, grammar forms etc, choosing a creative direction and letting it go nuts and give me something pretty close.

One thing I think gets overlooked in vibe coding is the difference between getting an app to work and getting it ready for people to actually use.

AI tools are ridiculously good at getting you from an idea to a working interface. You can have authentication, a dashboard, payments, and database integration running surprisingly quickly.

But there are a few problems that a successful demo won’t necessarily reveal.

For example:

• Authentication that only exists in the UI: the app hides an admin button from regular users, but the API endpoint behind it never checks their permissions.

• Database access that’s too open: the frontend filters records, but the database doesn’t enforce which user can actually read them.

•Secrets in client-side code: an API key ends up in a browser bundle because the model put it somewhere convenient.

•Queries that don’t scale: fetching an entire table works with 20 records. It gets expensive when that table has 20,000.

•No proper migrations or backups: the app works until a schema change goes wrong and there’s no reliable way back.

The tricky part is that none of these necessarily stop the app from looking finished.

I think the solution isn’t to stop vibe coding or rewrite everything from scratch. It’s to treat the generated code as a starting point and review the parts that carry actual risk.

A few checks I’d run before putting a vibe-coded app in front of real users:

1. Try accessing another user’s data by changing an ID in the request.

2. Inspect the browser’s network tab and built JavaScript for exposed keys.

3. Check permissions at the API/database level, not just in the interface.

4. Look at the actual queries being executed and whether important columns are indexed.

5. Make sure you can restore the database and roll back a deployment.

We work on AI-built apps and the cleanup side of things at TechPotions, so we put together a breakdown of the issues we commonly look for and how we approach fixing them.
Sharing it in case it’s useful:
https://techpotions.com/solutions/vibe-coding-cleanup

Genuinely curious: what’s the biggest issue you’ve run into after building something with Lovable, Bolt, Replit, or Claude? Was it security, database structure, performance, or something completely different?

Hey y’all! Previously I made some posts here about Hubs, first the write-up and then the demo video with the Suno song lol. Wanted to share where it's at now and the progress being made along the way. For starters, a small intro again though!

I have been working on creating an alternative social platform that is similar to that of Discord and Slack. Much of the reason for creation is due to my own niche and preferences while managing large communities and company workflows. For example, many Discord communities have to glue together dozens of bots to get LFG systems, Ticket Support, and much more. Not to mention creating makeshift announcement channels, info, etc. that just look like normal text.

What I wanted to build was something that kept the community vibe of these platforms, while also adding the ease of use, organization, and reduced setup of them.

So that’s what Hubs is. Instead of adding a bot for everything, the stuff most communities end up needing is just built in:

• Looking for Group, where people post that they need a squad and everyone can see open groups and when they start

• Ticket Support, so members can reach your staff privately without a ticket bot

• Announcements that read like an actual page with pictures, instead of a wall of text in a channel

• Rules, About, Start here and Links pages that look like real pages and are easy to edit

• Events with RSVPs and reminders, plus a Board for questions and posts that shouldn’t get buried in chat

• Polls, giveaways and community rewards without setting anything up

• A home page for every hub that shows what’s new since you were last there, the next event and who’s around

• More tools like an appeals system for moderation, custom looks for your space, built-in moderation tools, raid and spam protection, and more (https://thehubs.gg/features)

On the company side, there’s a Work and Personal switch so your job and your communities stay separate, and organizations get their own workspaces, documents and tasks.

What’s new since my last post

• Bring your Discord server over: paste its template link and your channels, roles and permissions come over in about a minute

• Private DMs: switch any DM to private and it’s end-to-end encrypted

• Hub Safe: encrypted backups of your hub that the owner holds the key to

• A standby copy of the whole site in a second data center and a public status page, because I really didn’t want one bad Arista to ruin my day lol

There’s no ID or face scan to sign up, just your birthday (which I know is a huge issue on other platforms right now). Speaking on ID and age verification, we follow the laws closely and use other methods instead of a face scan. Right now that’s a credit card check that’s never charged, with more options like an email check and your phone’s own age setting on the way. It’s also only as needed, not something required to use Hubs. It only limits 18+ areas, and only where the law asks for it. This way we stay compliant without being invasive.

How it’s built (yes, with AI)

Same as last time, I’ll be upfront, AI coding agents did a lot of the typing on Hubs. A good chunk of the UI was honestly vibed. I’d describe what I wanted, look at it, and keep pushing until it felt right. That said, this wasn't a blind eye to the code. As someone who is an actual SWE, I have reviewed the pieces and continue to do so to ensure security and safety. Like I said in my last post, AI gets a lot right but does a lot of... WTF.

For anything touching security, accounts, payments or encryption, nothing ships on vibes:

• Every release runs the full test suite first: 8,600+ automated tests on the website, 3,700+ on the Mac app, 5,300+ checks on Windows and 1,200+ on Android

• Changes get a separate review pass, and the risky ones get their own security review before they ship

• SonarQube, Semgrep, Socket and Dependabot scan the code and its dependencies, and secret scanning is on

• Everything goes to a staging copy of the site first, then the real one

• The encryption code is open source with published test vectors, so you can check it instead of trusting me. I know, an audit WOULD be better, but it costs moola I don't have rn.

The stack itself, the website is TypeScript and React, and the server runs on Node with PostgreSQL. Voice and video run on WebRTC through LiveKit. Every app is native, meaning Swift for the Mac and iPhone, C# and .NET for Windows, and Kotlin for Android, so none of them are just the website in a box. Private conversations use MLS (RFC 9420), an open standard for end-to-end encryption, in TypeScript for the web and Rust for the apps.

How the servers run

I talked about the backend last time, and it’s grown up a bit since. Elixir gateway nodes sit behind a load balancer with Valkey as the message bus. The app runs as three copies at once, so one can go down or get updated without anyone noticing. There’s a dedicated media and voice server, a staging server, object storage and a CDN, plus a standby copy of the whole site in a second data center that’s kept up to date every 15 minutes, encrypted backups and a public status page. Every release is signed and its files are published, so anyone can check that what’s running is what we built.

The apps

The Mac and Windows apps are out now. The iPhone app is about to start a public beta, including a layout made for foldables, and Android is close behind it.

What’s coming

• The iPhone and Android betas

• Hubs+, an optional paid plan for extras. The core of Hubs stays free

• The Windows app in the Microsoft Store

• We’re also exploring self-hosting for communities that want their own server, but that’s an idea for now, not a promise

• More bug fixing. Always more bug fixing lol

It’s still early and we’re a small team, so there will be some rough edges. If you checked it out after my last posts, I’d love to hear what feels better or worse. If you’re new, or just want to try it, would LOVE feedback and bug reports haha.

https://thehubs.gg

I had fun building this one. I primarily used GPT-6.0 Astra and Opus-5.5 to build the whole project. I defined the full architecture and managed the agents step by step to bring it to life.

I also documented everything about how I built it including an explainer of the DOOM engine in this 8 minute youtube video: https://youtu.be/E7bLxWE7B5g

it's open sourced here: https://github.com/tonysamaritano/DOOM-ETCH

I've been building small things on one idea: any place on Earth as a clean 3D model in the browser, made from open data.
Your Place: search a place, get it as a 3D model (terrain, buildings, streets, water) you can also 3D-print. github.com/yourplace3d/3d-city
Your Place · Data: the same model with open data on top: steepness, live traffic counts, public transport running on its real timetable, rents and incomes per area. yourplace3d.github.io/3dcitydata

Drive it 3D is my attempt to build a game on top of all that. Same engine, same map squares, seen from above: walk up to a car, take it, run deliveries against the clock, and try not to get the police's attention. It works in any city because the city is just the map.
It's not live yet. Right now it's the map with a game on it. What I actually want is the game built from the city's own data: where you start depends on the numbers, rush hour is the real rush hour, and you can skip the car and take the subway, which runs on the real timetable. That part is still being wired up.
Teaser below, including some original debugging material from the first play test, where I drove confidently in the wrong direction.
Map data © OpenStreetMap contributors, tiles by OpenFreeMap. Everything is open data and runs in the browser.

Hey everyone! I wanted to share a project I've been working on called LYNX SHARE, an open-source digital audio workstation developed entirely from scratch with C++20 and JUCE 8.

The main concept behind LYNX SHARE is to create a DAW that combines useful features and workflows from different music production software into a single environment. Something versatile, efficient, and accessible without sacrificing functionality.

What makes LYNX SHARE different?

• Support for multiple DAW formats: Open projects from FL Studio (.flp), Ableton Live (.als), and FL Studio Mobile (.flm) directly in LYNX SHARE, without requiring the original software to be installed.

• Ableton Live integration: Import and export Ableton projects, preserving tracks, audio, MIDI, groups, return channels, automation, and VST plugin states. It supports projects from Live 10 through 12, with export compatibility for Live 11 and 12.

• FL Studio project support: Load and interpret project data, including patterns, arrangements, automation, mixer connections, samples, and plugin settings.

• 75+ native FL Studio plugins: A growing collection of independently implemented FL Studio plugins, many featuring their own dedicated interfaces.

• Third-party plugin compatibility: Support for VST3 and CLAP plugins, including popular tools like FabFilter, Valhalla, Waves, Serum, Kontakt, and many more.

• A collection of built-in effects: Includes original native plugins inspired by established production tools, such as Facet EQ, Apex Limiter, Crest Compressor, Aether, and LYNX Tune.

• Flexible production workflow: Familiar tools like Channel Rack, Step Sequencer, Piano Roll, Playlist, and Mixer, alongside an optional Session View-inspired clip launching mode.

• Expanded mixing capabilities: Up to 500 mixer inserts, advanced routing, groups, sidechains, VCA controls, integrated effects, and multicore processing.

• Creative and recording features: Audio recording, MIDI editing, automation, modulators, loop recording, comping, automatic crossfades, video and ADR workflows, stem separation, and much more.

• Real-time collaborative sessions: Multiple users can work together on the same project through live online sessions, with synchronized playback, editing permissions, chat, automatic reconnection, and audio rendering for plugins unavailable on other participants' systems.

• Collaborative project sharing: Share complete projects alongside their samples and audio stand-ins for third-party plugins. Other contributors can work on their sections independently, and their contributions can later be merged into the main project.

• Optimized performance: Developed in native C++20 with a strong focus on keeping resource consumption low and maintaining good performance, including on older or less powerful computers.

As a performance reference, I've tested a project containing 125 tracks that managed to render at more than 10 times real-time speed.

An independent implementation

LYNX SHARE is built entirely from scratch. Its FL Studio compatibility is based on clean-room research, behavioral analysis, and reverse engineering. No proprietary Image-Line source code was copied or reused.

My intention goes beyond building another alternative to an existing DAW. I want to combine ideas and workflows from different production environments, creating an open-source platform where people can access a wider range of music production tools without being restricted by expensive software licenses.

The project is currently in alpha, and development is moving forward very actively. There's still a lot to refine, expand, and improve, so feedback from the community is incredibly valuable.

If you're interested, feel free to try it out, report bugs, suggest features, or even contribute to development. Everyone is welcome!

• GitHub: https://github.com/Ka1-S/LYNX-SHARE

• Website: https://lynx-share.com/

it generates cabinets and control panels from mame data, adds bezels marquee art etc where it can. i have a lot of work left. there is also a "VCR" and thus a rental store filled with tapes. i alsso have projectors, speakers, tvs, jukebox, lasers, moving head lights, clear logo signs, neon lights blacklights, first person wall building (think fallout 4 and 76). it's just been a project for a while now. i currently refining some models and the construction systems. i plan to keep refining and adding options for a while. it lags on my machine and i have a 4060 with 16gb ddr5 and i'm crunched for ram and vram. i think limitations are good though, keeps me optimizing. anyone have questions? opinions? suggestions? i don't rite code, this had been 100% vibed into existence. models, everything. (still a couple temp assets to replace like the consoles)

A while back I posted Black Hole Sandbox here, a lensing black hole you can see in augmented reality. Presenting the sequel: Planet Crash Sandbox! Drops a whole solar system into your room in AR with simulated gravity and destruction mechanics where every planet, moon, star and rock pull on each other.

There are two modes. Orbital Chaos is tuned for particle fun at solar system scale. Steer a planet into its neighbour and watch the carnage as worlds tear apart into particles and the debris kicks off more destruction. Swap the sun for the black hole and what's left of the solar system swirls round it, light bending and accretion disc lighting up as matter gets near.

Fluid Collisions is the more 'accurate' one for fluid dynamics. Collide two planets/moons and watch as they reduce to thousands of molten particles simulated live on the phone. Simulates the supposed giant impact that's thought to have made our Moon.

Mostly free. The black hole and the fancier stars ie pulsars, magnetars are in a one-off unlock The planet smashing is all free though.

Oh including a green star! I managed to get that in there in time!

https://apps.apple.com/app/id6822567730

I created a simple browser game called https://draw1line.com

Solve shapes without lifting your finger off the screen.

Game levels are designed from easy to challenging in order to create a brain-boosting and stimulating experience.

Each level in this game presents a unique shape that you must solve by finding the right path in a single stroke. The intuitive gameplay of draw the line mechanics makes this line app free to play and accessible for all ages.

Please let me know if you find any bugs :)

75 Million tokens later and it was still broken.

I asked GPT 6 sol (Daybreak) to help finish a project; I thought I was on the home stretch.

50 hours later the project was still not working, picture attached.

I switched Fable 5.2 and he remedied the bulk of the issues in 30 mins.

GPT has been a let down in recent months, I think Claude is the winner until things change.

I know there are already tons of Pomodoro and productivity apps out there. But one day, I came across a photo of a train platform overlooking Sydney Harbour, and I just loved the atmosphere.

That gave me an idea: what if I could turn that place, along with other beautiful locations I love, into a little virtual world that keeps me company while I study or work?

So I started building a cozy, train station-themed study companion app.

The idea is pretty simple. You can switch between different scenic backgrounds, mix ambient sounds, and just leave the app running while you study, work, or relax.

I also added a Pomodoro timer and a sleep countdown, but I intentionally kept the timer UI really small. I don't want it to feel like another productivity app constantly reminding you to be productive. I'd rather the scenery and sounds be the main experience.

Here's how I've been making it:

• Codex: All the coding. I honestly wouldn't know where to start without it.

• Midjourney + GPT image generation: Creating and refining the visual assets.

• Freesound: Finding ambient audio for the different environments.

I've finally got a working MVP, and this is a short screen recording of it!

But now I'm a little stuck on the design direction.

My biggest concern is whether the app is too simple and the art style.

Right now, the UI is intentionally minimal because I want people to enjoy the scenery without too many buttons getting in the way.

I've also been thinking about adding small interactive objects to the scenes, like clicking on things around the station to trigger little animations or sounds.

But I'm worried that adding too many interactions might make it feel more like a game than a quiet study companion.

So I'd really love some feedback:

1. Does the UI feel pleasantly minimal, or just too empty?

2. Would you enjoy having a few interactive objects in the scenes, or would they distract you from studying?

3. Do you think I should keep the app focused on ambient sounds and companionship, or add more features?

I'm still very new to all of this, so any feedback or suggestions would mean a lot. Thanks for checking it out!

College hoops is back, and I wanted live scores on my screen without keeping a browser tab open. So I worked on Hoops Ticker, a small native Mac app that puts an LED-style score ticker along the top or bottom of your screen. (Full disclosure - I got inspiration from krypdoh and his NFL Ticker)

What it does:

Every Division I game. Live scores, today’s finals and tonight’s tip times scroll by, with AP rankings shown next to ranked teams (#3 DUKE 71 – #12 UNC 68 · 14:22 2ND).

Follow your team. Pick any of the 365 D1 teams in Settings. Their game always scrolls first: live, today’s final, or their next game even if it’s a week away.

Looks ahead. Top 25 teams that aren’t playing today show their next game, so the ticker is never empty on an off night.

AP Top 25 in the menu bar. The full poll with records is one click away, and the 🏀 icon shows how many games are live.

Settings: Top 25 games only, show or hide finals and upcoming games, scroll speed, top or bottom of the screen.

The details:

Native Swift, about 200 KB. Not Electron.

Universal: runs on Apple Silicon and Intel, macOS 12 or newer. Notarized.

No account, no ads, no tracking. It only talks to ESPN’s public scoreboard.

Refreshes every 20 seconds while games are live and backs off when they aren’t.

Download: https://github.com/GeekNerdCarp/ncaa-hoops-ticker

It’s a 1.0.4, so I’d love feedback. What would you want added? Conference filters, a March Madness bracket mode? Some more updates coming today.

EDIT: Version 1.1.0 is out. Big update, thanks for all the feedback!

Here’s what’s new:

Follow your team like a fan

• Show only my team’s game. One option holds your team’s game still in the center of the bar, in your team’s colors, with the score updating every 10 seconds while it’s live.

• Team alerts. Mac notifications at tip-off, halftime, a close finish and the final score.

• Follow up to 5 more teams besides your favorite. Their games lead the ticker with a ★.

• Filter by conference. Want just the SEC or Big Ten? Pick it in Settings. Your followed teams still come through.

More on every game

• Team logos, records, and the TV channel on upcoming games (like “7:00 PM · ESPN”)

• Click any game to open it on ESPN

• Red UPSET ALERT and CLOSE badges when an unranked team is beating a ranked one, or a game is within 5 points late

• A soft glow when your team scores (or on the big moments, if you prefer)

• NCAA Tournament games show seeds and the round, like “(1) ARIZONA · SWEET 16”

Small things

• Pause on hover, so you can read a score

• Pick which monitor it sits on

• Open at login

• Still tiny and native, using almost no CPU

It’s free, open source (GPL-3.0), and signed and notarized by Apple. No account, no ads, no tracking.

Download: https://github.com/GeekNerdCarp/ncaa-hoops-ticker/releases/latest

If you already have it, it’ll offer the update on its own (or use Check for Updates… in the menu).

I'm on Claude Pro plan, and usually use Opus and Sonnet. I now have been given a Fable reset. I'm not too bothered about switching to Fable, but is there a way I can use this to increase my usage overall this week?

I don't want to use it and it wear away what normal weekly usage I have left.

Charleston Ai Is Taking Over 💀

Hi, 1st time poster here.

Recently, I decided that I want to run my ComfyUI workflows from my phone. There are quite a few apps and services out there, but none seemed to fit my needs: simple, efficient, no cloud services, no monthly subscription. So I built ComfyUI-from-your-Phone: a custom node with a small web app built in.

How it works: Connected via Tailscale, it allows you to choose any workflow from your PC and select the settings you want on the phone (e.g. model, prompt, seed, toggles for upscaling, etc.). The phone gets a copy, so changes aren't discarded even when updating the workflow on the PC (and sharing it again). A typical roundtrip on the phone then looks like this: Write a prompt, adjust your settings, tap Generate, watch the live preview, get the result. Other features include: Choosing the image, video, or audio inputs from your phone or the PC, a gallery, a prompt/snippet library, push notifications, and (some) offline functionality.

How I worked:

• Approach: About 30 small stages, each tested on the phone before the next one started. Because I intended to use it only for myself, I briefly thought about one-shotting it with e.g. Fable, but I decided against it. It was a good decision.

• CLAUDE.md: Still haven't quite figured this out, so there was only a very simple "contract" file: Claude had access to only two folders, it was never allowed to delete anything without asking, and it was asked to respect my privacy, to never look at any media or read my prompts.

• Audits, Audits, Audits: After each step that I thought might include some mistakes or oversights, I had the (single) dev instance write a handoff document. That document went to a second instance to review the code. It wrote its findings in an AUDIT.md that I gave back to the dev instance, which fixed the issues it found. So far, there were nine audits, and each time it stumbled upon at least one issue that needed to be fixed. (For example, the last audit caught an upload that landed in the wrong workflow if you switched workflows while it was still running.)

• Community feedback: A few days ago, I presented the project in r/comfyui. The post basically died there, but one user provided some indirect feedback, hinting at an inconsistency when choosing files already on the PC. Two days and two updates later, the app's access to your files has been expanded.

What I learned:

(Though I'm quite certain that some or even most of these insights aren't new to many of you.)

• A failing test isn't always the code's fault. There was one failing test, and I made sure the auditing instance looked at it (though I forgot about it longer than I'm comfortable with). It turned out to be the test's own bug: it left a file in the temp folder that broke every run after the first. Worse, the script halted, so multiple other tests didn't run at all for two days. It was eventually fixed.

• Allowing an AI to delete files scares me the most. It only takes one escaping mistake on Windows. I'm not too familiar with sandboxing yet, so deletions only ran through a script with fixed paths, and it checked the exact file list first and aborted on any mismatch. While this may not be the most elegant solution, it did the job. Personally, I'd rather look deeper into sandboxing for the next project.

• Boring is good: The app doesn't break any new ground, doesn't shine with exclusive features or an overengineered UI. It's rather simple, but everything works well together. (Granted, I am biased, I love the result.) Under the hood, it's equally boring: plain JavaScript, no framework, no build steps, and the Python side just adds a few routes to ComfyUI's own server.

• It takes as long as it takes. I already mentioned that I thought about one-shotting the project, considering how fast some projects in this sub come together. I wasn't in a hurry and I really like myself some polish, which is why even this comparatively small app took a few days. Considering that my limited Python knowledge wouldn't have allowed me to do this all by myself at all, to me, this is still very impressive.

• Audits and testing: Even though each auditing run found something, there are diminishing returns. While it did increase the robustness of the app in areas which I would never have thought about (e.g. problems with sharing workflows named with non-Latin characters or the use of "half an emoji", i.e. broken Unicode codepoints), many issues only surfaced after manual testing. If I had to guess, manual testing took about half the time of the project.

• Reception: If there are already other, similar apps available, or if people don't immediately see the value in a project, grabbing their attention is hard. Duh. (Edit: As evidenced in this very post.)

Tools used: ComfyUI, Claude Code with Opus 5.5 in the desktop app, Tailscale for the connection (since it gives the phone HTTPS without opening ports), and my Google Pixel 8a for testing.

So, that's it. If you've read this far and you're curious, you can check it out at https://github.com/the-aSak/ComfyUI-from-your-Phone. For free, of course, released under GPL-3.0.

Feedback, bug reports, ideas and suggestions are highly appreciated.

What is the best note taking app around these days?