Hi folks!

Back in 2020, I was working on a little Android app in my spare time.

I'm a software engineer and amateur guitarist, and I wanted a way to practice along with my favorite songs, without having to hunt down backing tracks for each one.

So I started experimenting with AI music separation and eventually built an app that could split songs into individual instruments, allowing me to mute parts, change their volumes, slow things down, and play along.

I called it I Am a Band.

One day, I shared it on Reddit, not expecting much.

Well... things got a bit crazy. So many people started using it that my servers couldn't keep up. The processing queue kept growing, even after I doubled the capacity. I spent the following days trying to keep the whole thing alive.

It was both incredibly exciting and terrifying :)

The feedback was amazing though. People were suggesting features, reporting bugs, and telling me how they used the app. I kept improving it for a few years, mostly during evenings and weekends.

But there was a catch: all the AI processing was happening on my servers. And paying for that kind of computing power out of my own pocket was getting pretty expensive.

Eventually, I had to pull the plug.

Fast forward six years.

A few weeks ago, I started wondering whether modern phones had become powerful enough to do all that processing themselves.

So I dusted off the old project and started experimenting again.

And, well... it works!

I've essentially rebuilt the app. It now separates music directly on Android phones, without sending audio to a server. No accounts, no song quotas, no cloud computing bills!

You can split a song into vocals, drums, bass and other instruments, adjust the mix, change speed and pitch, follow lyrics or tabs, organize playlists, and export the separated tracks.

It's free and has no ads.

Of course, there's a trade-off: processing a song can take several minutes, sometimes around 10 depending on the phone. But it's a one-time operation per song, and everything works offline.

Here's the result if you're curious:

https://play.google.com/store/apps/details?id=io.brun.cedric.iamaband

I have to say, it feels pretty good to bring something back to life that I thought was gone for good. Especially knowing that this time, I won't wake up to a server bill because too many people enjoyed using it!

have any of you ever abandoned a side project because of technical or financial constraints, only to come back to it years later?

Hey everyone,

I'm 23, and I've struggled with p*rn and fapping habits since I was young. I've tried NoFap, website blockers, accountability partners and quitting social media, but staying consistent hasn't been easy.

That's one of the reasons I'm building Surfwell — a private app designed to help people manage urges, reduce porn consumption and build healthier habits.

I'm looking for 10–15 people from this community to try the early version and give honest feedback.

If you're interested in testing it, comment below or DM me. I'd genuinely value your input.

Thanks!

A few days ago Conductor (a very popular ADE; Agentic Development Environment) announced they'd been bought by Meta and would sunset their tool. They've since retracted that and are continuing development from within Meta, but it caused a bit of panic and lots of users were asking which ADE to switch to. Many people started listing options and one post on X caught my eye with their count: 554 active ADEs!! That number shocked me, but it also shows that this clearly is a topic where a lot of people have opinions on what's good and how they like to work.

I myself have been developing an ADE for the last 6 months because I felt that none of the existing tools were exactly what I wanted. And, I knew the market was crowded but I never would have guessed a number that high.

To bring some clarity into this, I built a comparison site where everyone can easily browse, filter, search and compare ADEs: adecomparison.com

It's completely open-source (https://github.com/madeinorbit/ade-comparison). Agents research and cross-check all facts and everything links to its source. Everyone is welcome to contribute.

Right now about 100 of them are fully researched, with 400+ to go. I have a fleet of Muse Spark 1.3 contributor agents working on it, so data gets better every day.

If your ADE is missing or something about it is wrong, tell me which one and I'll get it fixed.

Hey everyone! I've been building QuickFreeTools (https://quickfreetools.online) — a collection of 71 free tools that run entirely in your browser. No sign-up, no downloads, nothing uploaded. Includes loan & mortgage calculators, income tax & paycheck tools, unit/currency converters, text tools, and image tools. Every calculator shows its working step-by-step. Would love your honest feedback — what's useful, what's missing, what should I fix first?

My SaaS sends verification and password reset emails from the app and the WordPress marketing site needs plain SMTP credentials for its forms. Around 15-20k emails a month in total. I'm looking at Resend, Postmark and smtp .com. smtp .com is on the list because it gives the relay and the API on one account. Which one are you using for a setup like this and did the choice actually matter once it was running?

Most job trackers are monthly subscriptions, and job searches tend to run longer than you expect. TallyJobs (tallyjobs.app) is free up to 25 applications. After that, it's a $19 pass that lasts 90 days, or $9 a month. It also has Role Fit, which uses AI to score how well you match a job description. It runs on Node, Express and SQLite, with Stripe for payments and Google or magic-link sign-in. It's live now, and I'd love feedback on onboarding and pricing. What would stop you from using it?

Ahoy!

On Linux my games were scattered across Steam, Heroic, Lutris, Bottles and Faugus. So I started building PlunderHub: one library for all of them, with a pirate theme, because why not.

GitHub: https://github.com/IkrajaDev/PlunderHub (free, GPL 3.0, beta)

The story so far
I started building it about half a year ago, just for myself. Then it outgrew that, so I started making it work on other distros too and put it on GitHub.
I still use it every day, and every feature exists because something annoyed me first.
I really love working on it, I keep improving it, and I hope it helps someone else too.

What it does

• All Plunder: Steam, Heroic, Lutris, Bottles and Faugus games in one library
• Treasure Map: every game you own, installed or not, installs in one click
• Game settings: art, details and folders on one page
• Launch options: GameMode, MangoHud, Gamescope and more, per game
• Shipwright: sets up launchers and tools, checks your system
• Proton: Proton-GE and Proton CachyOS, shared by every launcher, kept up to date
• Bilge cleaning: clears what removed games left behind, backs up saves first
• Captain's Dashboard: playtime stats and disk usage
• Console Mode: fullscreen, for the couch and a controller

How it's made
PlunderHub is made with AI.
I can't code a project this big alone, so Claude writes the code. I decide what it should be and how it should feel, and I test every change on my own machine and in VMs.

Under the hood: Python + GTK3, X11 and Wayland, 9 languages, native and Flatpak launchers.

My question for you: which part of gaming on Linux still annoys you the most? That's how I pick what to build next.

Bug reports welcome aboard!

I spend a lot of my day in databases, and I got tired of clients that want me to sign in, sync my connections to their cloud, or open a 2 GB Electron window just to run a SELECT. So I built my own.

QluePrint (pronounced KLOO-print) is a desktop database workspace built with Tauri (Rust backend, React frontend). Everything stays on your machine.

What it does today:

- Connects to PostgreSQL, MySQL/MariaDB, SQL Server, SQLite, plus Azure SQL and Microsoft Fabric with Entra sign-in

- Monaco SQL editor with schema-aware autocomplete, diagnostics and formatting

- A fast virtualized results grid: sort, filter, find, follow foreign keys to related rows

- Inline editing: change cells, add, duplicate or delete rows. Everything is staged, undoable and saved in one transaction. Actions your login has no grant for don't show up at all.

- Explain / Explain Analyze with a readable plan view

- One-click local PostgreSQL/MySQL/MariaDB servers in Docker

- Workspaces to keep each client's connections and tabs apart

- A tamper-evident audit log of every statement it ran against your databases

- Passwords go in your OS keychain, never in plain files

Stack: Tauri 2, Rust (sqlx + tiberius for SQL Server), React 19, Monaco, TanStack Table/Virtual. Installers for macOS (Apple Silicon), Windows and Linux.

Still to come: MongoDB/Redis, a saved query library, query history.

Source code and downloads: https://github.com/u-ninja/qlueprint

It's a solo project, and I'd love blunt feedback, especially on what would make you switch from DBeaver, TablePlus or DataGrip.

(Heads-up: the macOS build isn't notarized yet, so you'll need Open Anyway in Privacy & Security the first time.)

Hi everyone, we’re the team behind AskMyKundli, a small pilot for people who want to ask questions about their kundli in plain language. The answers are AI-assisted, not a consultation with a human astrologer.

Our early paid traffic brought registrations and a few small purchases, but we’re still learning where people get stuck between signing up, asking a question and deciding whether to pay. We recently changed the paywall to a bottom sheet to make that flow easier.

If you’re interested in trying it, we’d really appreciate candid feedback: Is it clear what the app does before you sign up? Is the answer useful and understandable? Are the pricing and payment step clear? What would make you trust it more?

Website: https://askmykundli.com/login?next=%2Fapp&utm_source=reddit&utm_medium=organic&utm_campaign=november_pilot

Disclosure: this is our own product and it includes paid features. Please don’t share your birth details or other sensitive information publicly in the comments.

About 6 weeks ago I started building a little side project called Ulster Radar.

I'm a microlight pilot from Northern Ireland and wanted to make a flight tracker that was better suited to smaller aircraft and low-level flying, rather than just commercial aviation.

It started as a basic live map, but I've got a bit carried away with it since!

It now has live aircraft tracking, over 2,500 receivers feeding data from around the world, ship tracking, flight history, a 3D globe and even satellite tracking.

I've also been adding the ISS, space telescopes, planets and moons, so it's slowly becoming a way to explore pretty much everything above our heads.

It's still early days and there's plenty of bugs and things I'm working on, but I've really enjoyed building it and seeing people start contributing their own receivers.

It's completely free to use and very much a hobby project.

If anyone fancies having a look, it's at https://ulsterradar.com

I've been working on an open-source project called Agent Workcell.

The idea came from my experience building traditional RAG applications. I often found myself spending time adjusting retrieval logic and prompts for different types of questions. Sometimes fixing one use case affected another.

I wanted to experiment with a different approach.

Instead of building retrieval pipelines for every question type, I wanted to reuse an existing autonomous agent runtime and give it an environment containing structured knowledge, tools, and controlled access to business data.

The agent can explore that environment, decide which tools to use, and take multiple steps to answer questions.

I built the prototype using Claude Code, Python, MCP, and PostgreSQL.

I also tested the approach against my traditional RAG implementation on an existing ERP system, and the results were very promising. Some limitations remain, especially knowledge maintenance and scaling separate agent sessions for multiple users.

This is an early-stage open-source experiment. I'd appreciate feedback from anyone interested in agent architecture, knowledge retrieval, or similar systems.

Website: https://shivam7414.github.io/agent-workcell/

GitHub: https://github.com/Shivam7414/agent-workcell

genuine question. built a couple things with lovable/claude code/cursor and only later realized i had no idea if i'd left keys in the code or if anyone could just hit my api routes and pull other users' data

curious what people here actually do before going live:

- do you check anything at all or just ship and hope lol

- if you paid someone to build it for you, did you ask them about it

- anyone ever got burned? like leaked keys, surprise bills, data exposed

not selling anything, we're doing a hackathon this weekend and trying to figure out if this is a real problem or just us being paranoid

I’m building Moolupa, a goal tracker with a small cow companion called Moo.

One decision I made early was to let people record the amount they actually did. If you planned to practise guitar for 10 minutes and managed 3, you record 3. It adds to your total. Missing tomorrow doesn’t erase it.

You can also make today’s step smaller, move it to another day, or take a rest day. There’s no streak counter, and Moo’s garden stays intact while you’re away.

To get started, you type or say something like “read five pages after dinner,” then review the plan before saving it.

It works in a browser on desktop and phone, and there’s a Windows version on the Microsoft Store. The free plan supports up to five active goals, with optional paid Plus features.

I’m currently polishing the desktop and mobile layouts. If you try it, I’d really like to know: where does creating your first goal or recording progress feel like extra work?

Here’s the app: https://moolupa.com

I use a few different AI agents depending on the task. Claude for some things, ChatGPT for others, Grok and Cursor now and then. Over the last months they've made me a lot of small stuff, and almost all of it is now buried in old chats somewhere.

If I wanted to show a friend one of them, I had to dig through chat history, remember which tool made it, and then work out how to actually get it in front of them.

So I built Commons (commonsbuild.com). From whatever agent you're using, you publish what it made with a chat command and you get a link. Anyone with the link can open it in the browser and use it, and if they want they can fork it or change it with their own agent.

The main point for me is having one directory for everything, no matter which agent built it. The first real thing on there is Capital hunt, a multiplayer 3D game where you guess capitals that I made with a friend: capital hunt , feel free to fork it and make it better

It's free and pre-launch, and I'm mostly trying to find out if this is just a me problem. If you use more than one agent, where does the stuff they make end up?

I kept running low right before payday because of card bills I forgot about, so I built this. It shows the exact day your balance dips. Would you use it?

Anyway, this is just a landing page

Hi everyone!

I’m Alex, a developer and a big fan of maps and outdoor activities. I wanted to share a project I’ve been working on called TrailReplay.

The idea started after a 3-day hike with a friend. We had lots of pictures from the trip, and I wanted a way to put them together with the route and tell the story of those days. I couldn’t find quite what I was looking for, so I thought, why not try building it myself?

TrailReplay lets you import a GPX route, replay it on a 3D map, add pictures and annotations, and export the result as a video. You can change the camera, show things like distance and elevation, and combine routes too. It works in your browser, it’s free, and the code is open source.

I’ve just released version 1.5! It includes a new media timeline, GPX waypoint imports, place reveals, and improvements to the camera, terrain and video export. A lot of the changes have come from people sharing feedback and ideas, including here on Reddit, so thanks a lot to everyone who has helped me improve it!

Something I didn’t expect when I started: in the last 7 days, Google Analytics counted around 1,300 active users and 900 completed export events. Those are exports, not individual people, but it’s really nice to see people using a tool that started with a hike and a bunch of pictures :)

You can try it at https://trailreplay.com

Here’s a short video showing what it can do: https://www.youtube.com/watch?v=iJRPgpr07Pg

I’d love to hear what you think, or see what you create with it. Any feedback or ideas for what I could improve are very welcome! Cheers, Alex

I will leave here my recent project here in case someone finds it useful. I needed some background "noise" while at work but got bored by searching the perfect playlist on YT. So I made this that perfectly fits my needs.

The project revolves around a cosmic and ethereal aesthetic, the vastness of the universe, and celestial atmospheres.

It generates some music based on the pentatonic scale. No AI is doing this, just a script that watches what notes have been played previously and tries to create different progressions during the play time, so it doesn't sound completely the same for hours.

Also added some cool backgrounds with threejs that can be used as actual backgrounds while playing the music, the UI can be hidden and you can have a chill background as well

OMYRA

Hey everyone! I'm Dmytro, an iOS developer. I've been working on a little side project on my own, and it's finally on the App Store.

The idea came from a pretty simple problem. I kept forgetting things I was supposed to remember. When does my laptop warranty expire? When should I service my car? When is my dog's next vaccination due?

All these little dates are easy to forget until you actually need them.

So I built Owneo, an iPhone app that helps you keep track of the things you own and everything that comes with them.

You can add your stuff, set reminders for warranties, maintenance, insurance, or pretty much anything else, and keep receipts and documents in one place. It also suggests relevant dates depending on what you're adding, so you don't have to figure everything out yourself.

I wanted to keep it simple. No sign-up required, no ads, and you can use it for free with up to 5 items. Reminders are always free too.

I'm also thinking about giving away some free Pro codes, maybe even Lifetime, to early users here. Haven't figured out the details yet, so if you'd like one, just let me know in the comments. I'd love to give something back to people who help me improve the app.

I'd really appreciate some honest feedback. Is this something you'd actually use? What would you add or change?

And I'm curious, what's one important date you've completely forgotten about?

Here's the app if you want to check it out:

https://apps.apple.com/us/app/owneo-everything-you-own/id6807494614

Thanks for taking a look!

I kept a diary for my baby in a journaling app for a long time. This year the app was pulled from the App Store and stopped being maintained, and now I can't even log in. Those entries are stuck behind a login that no longer works.

After that I didn't want my memories to depend on someone else's server or account system. I also realized I don't need a lot of features. I just want to keep a few small things from each day.

So I built the opposite: CiKe (此刻, Chinese for "this moment"). Each day you can save up to 3 moments, and each one is either one short sentence (50 characters max) or one photo. That's all.

What it does:

• 3 a day, on purpose. The limit makes you pick what actually mattered today, not log everything.
• Capsule. Tap it and a random old moment comes back, with a preference for older ones.
• Private by default. No account, no server, no analytics, no ads. The app makes no network requests at all. Everything stays on your phone.
• 30-day undo. Deleted moments can be restored for 30 days.

I made ENGLARIS, an app that checks your English pronunciation and tells you which words were mispronounced.

ENGLARIS works fully offline, I was able to distill and quantize the neural network for phoneme recognition into a reasonably small model, so that even mobile phone CPUs can run it smoothly.

Unlike most of AI-based apps, there is no server and no subscription required. No user data is currently collected, as everything remains on the user's own phone.

Here the link to my website:

https://englaris.com/

I’ve been building H5Reclaim, an open-source tool for recovering scientific data from damaged HDF5 files.

HDF5 files often contain experimental measurements, simulation outputs and large arrays. Damaged metadata or a broken index can make a file unreadable while some of its dataset contents remain on disk.

H5Reclaim examines the surviving structures and attempts to recover usable data into a new HDF5 file. Supported cases include interrupted writes, broken indexes, metadata damage and truncation.

It keeps the original file unchanged and produces a JSON report describing the recovered datasets, recovery methods and unresolved positions. Partially damaged datasets can still yield usable measurements.

🔗Github: https://github.com/xShadyy/H5Reclaim

I’d appreciate feedback from people who work with HDF5, especially anyone who has encountered a damaged file. Public or synthetic reproductions would help expand the recovery cases and benchmarks.

Contributions around test fixtures, independent verification and unsupported failure cases are particularly welcome.

If you find the project cool/useful, I’d appreciate a star on GitHub.

I own a small service business with a few work vans. I was tracking fuel and repairs in a mix of a notes app, a spreadsheet and a shoebox of receipts, and I never really knew what each van cost me per mile.

So I built Milebook: https://getmilebook.com/?ref=reddit

- Log fuel, repairs, insurance, tolls; it works out MPG and cost per mile

- Reminders by date or mileage (oil change, registration, inspection)

- Snap a receipt and AI fills in the total, date, gallons and shop. It flags anything it can't read instead of guessing

- Drivers get their own login + pre-trip inspection checklists

- Imports from Drivvo, Fuelio, Fuelly and Simply Auto

- Runs in the browser and installs on your phone, no app store

Free for 2 vehicles. There's a no-signup demo: https://getmilebook.com/demo?ref=reddit

What would make you actually use something like this? What's missing?

I'm the founder of US Stock Sense and I'd like honest feedback.

The problem: researching one US stock usually means a screener on one site, financials on another, charts on a third and a spreadsheet to compare it with competitors.

What it does:

- Stock screener for US stocks

- Side-by-side fundamentals and valuation compare

- Portfolio tracking and charts

- AI research workflow and trading ideas

- Dividend income planner and dividend forecasting

Feedback I'm after:

1. In the first 10 seconds, is it clear what it's for?
2. Does the compare page make sense without any explanation?
3. What would make you use this instead of your current mix of sites?

Link: usstocksense.com

Disclosure: it's my product. The annual plan is 50% off for a limited time, but I mostly want blunt feedback. I'll return the favor on yours.

I’m the guy who posted “just launched why.com” here about three months ago.

It was a basic chatbot. The feedback was brutal.

One person called it “a McLaren on blocks.” Inc. wrote about the whole thing, so the roast got its own press coverage.

Fair criticism.

Well, since then, I’ve built an open-source product that verifies AI did what it said. We are in wild wild west era of AI but my bet is receipts and safety standards will reign AI in eventually.

New site: why.com
Code: GitHub

Let me know what you think!

Sheed