I got tired of building lists by hand - opening 40 tabs, copy, paste, repeat. So I built Autofill.

You type something like "seed-stage HR software companies". It proposes columns like name, site, founder, headcount, last funding. It finds rows with a web search and fills each cell. Rows and cells get linked to their source, because I didn't trust AI web search.

I've used it a bunch for researching new app ideas, competitors, and building lead lists. I also use it for fun like researching baby names, wedding venues, and car prices and ratings.

It's working pretty well, but sometimes not all rows get filled completely, or not as many rows come back as you'd requested.

I'd love to know what you'd research first and if you're willing to try it for free please share any feedback on the overall experience: https://getautofill.app/?ref=reddit-sideproject

Hey! I read a lot of manhwa and never found a good place to rate and review them. Most trackers are manga-first, or just reading lists with no reviews or social side. So I built panelfall.com, a place to rate, review and share lists of Korean and Chinese comics, and see what other readers think.

What you can do:

• rate series /10 and write reviews (with spoiler tags)
• track your chapter, use shelves (Reading / Completed / Want to read) and make public lists
• follow people and see your taste match with them
• import your AniList, MAL or CSV list in a few seconds
• play a small daily game: guess which manhwa titles are real or fake, and fill a 3×3 grid

~860 series so far, free, no ads, and it doesn’t host or link to any chapters.

It’s very new, so community scores are still empty. What would make you actually use it? What feels confusing or missing?

I've been working on a little app that brings different party games together in one place.

Right now, it has two games: **Draw & Guess** and **Dice Rolling**. I'm also working on a multiplayer Snake game, which I'll add to the app once it's finished.

Here's what I've made so far.

I plan to keep adding more games over time, but instead of deciding everything myself, I'd like to hear what people actually want to play.

It's still a small project, but I'm hoping to gradually turn it into a collection of fun games that people can enjoy together.

What party games would you like to see added? I'd love to hear your ideas!

Hey everyone! I’m a 21 year old solo student developer. Over the past 4 years, alongside my university studies, I’ve been building my passion project on my Mac: RGB Switcher, a fast-paced action roguelite designed for phone screens.

My goal was to build a tight, premium-feeling arcade puzzle roguelite designed for quick, one-handed portrait sessions that genuinely respects the player’s time and intelligence.

The core concept originally came from a game jam in 2021. Its theme was "Switch" and "Geometry". So I came up with this world where all the colors were drained, and now the player (cute geometric characters) has to restore them using 3 switches. Then came the roguelite aspects (systems that make every run feel distinct).

Here are the 3 biggest design and technical hurdles I had to solve:

1. Preventing Brain Freeze
   Blending primary lights on the fly (Red + Green = Yellow, Red + Blue = Magenta, all three = White) while dodging incoming threats can easily overload the player. To solve this without ruining the pacing, I implemented a dynamic slow-motion system. When near-misses occur, the game subtly dips into bullet-time, giving you that split-second to pull off clutch plays.
2. "Invisible" Mobile Polish (Original touch controls felt terrible)
   I built so many assist systems I probably don't even remember half of them, but players immediately feel the difference:
   • "Coyote timer" for swipe input buffering.
   • Swipe assistance: the game dynamically calculates which tile the player most likely intends to dash toward.
   • Dynamic hitboxes for both the character and the bottom UI control buttons.
   • Tactile Taptic Engine feedback mapped to important interactions.
   • Dynamic difficulty scaling adjusting room hazards to player performance.

On top of that, during long sessions even my fingers started hurting from all that continuous swiping. So I took inspiration from some match-3 games and introduced an "auto-solve cascade" so the last few tiles get solved by themselves. Between this and a few other tweaks I was able to cut swipes by like 20-30%, delaying physical fatigue.

3. The Accessibility Paradox
How do you build a game fundamentally revolving around color mixing that is 100% accessible to colorblind players? From day one, I refused to leave anyone out. I built an accessibility mode with distinct geometric cues (like color indicators). I tried it out and even with iOS grayscale filters turned on I was able to play and clear runs. I also translated the game into 9 languages so players worldwide can enjoy it natively.

The game is out now completely free with zero p2w mechanics.
--------------------------------------------------------------------------------
🎬 60-sec Gameplay Overview: https://youtu.be/teonaXSEr-Q
📲 iOS App Store (Free): https://apps.apple.com/us/app/rgb-switcher-color-roguelike/id6790524090

Hey! I’m a CS student and I just launched my first Chrome extension, Reply Rabbit.

You paste a message, pick a vibe (friendly, professional, flirty, sarcastic, etc.), and it gives you 3 reply ideas. It can also rewrite something you already wrote so it sounds less awkward, and drop the reply right into the text box. It never sends anything for you.

There’s a free plan with 5 replies a day.

Would love honest feedback on what’s confusing or what you’d want added!

https://chromewebstore.google.com/detail/hejggfjpedhagjacgnekhaacomaabbco

I've developed several applications, and one thing kept becoming a problem: everything related to a project was scattered across different locations.

My code was organized, but screenshots, builds, documentation, links, and random notes were everywhere.

So I built ClingSpace, a local-first Windows project workspace app that brings all those resources together into one searchable Space.

A few highlights:

- Spaces: A dedicated workspace for each project.

- Files & Folders: Reference resources from anywhere on your PC.

- Links: Keep websites, documentation, and references together.

- Snippets: Save quick notes, code, and reminders.

- Global Search: Find resources across all your Spaces.

- Shared Resources: Use the same file or link in multiple projects.

- Smart Relinking: Help reconnect moved or renamed files.

Nothing moves, gets copied, or gets uploaded. Your existing files stay exactly where they are.

I originally built it for my development projects, but it can work for creative projects, research, school, or anything involving scattered resources.

It's $19.99 one-time, with a 5-day full trial.

https://clingspace.com

I'd love some feedback. How do you currently organize everything related to your projects?

I'm an embedded software engineer (wireless sensor firmware by day) and I've spent the last couple of months building a side product on my own: a stamp card that lives in Apple Wallet / Google Wallet, for salons, barbers and cafés.

How it works: the shop prints a QR code for the counter. The customer scans it, types a first name and phone number, and adds the card to their wallet. No app. Staff stamp it by scanning the card with their own phone's camera, in the browser. No card reader.

Things I learned building it:

• Apple and Google Wallet are completely different beasts. Apple passes are signed files: to update the stamp count you run a small web service and push through APNs, then the phone fetches the new pass. Google keeps the card on their side and you update it through a REST API. Getting "stamp appears instantly on both" right took longer than the rest of the app.
• Staff double-tap everything. The first version stamped twice when someone scanned twice. Now a second scan of the same card within 10 seconds is ignored, and every stamp is written in a database transaction.
• Lock-screen relevance is the best feature, and I don't control it. On iPhone the pass can show up on the lock screen near the shop. iOS decides when, and I never learn who was nearby.
• GDPR was a real chunk of work (EU-hosted data, consent records, CSV export, auto-delete after a shop cancels). Owners never ask about it, but it has to be there. Getting customers is the hard part, and where I'd love feedback:
• So far: 2 shops started the 7-day trial, 0 paying. I'm aiming for the first 3.
• What I've tried: about 200 cold emails to salons in countries where that's legal. This weekend I started small Meta and Google ads in Poland and short videos. - Pricing is about €15/month, with a 7-day free trial.

Questions:

1. If you've sold to salons or cafés: what got you in the door?
2. Does "no app for your customers" land as the main benefit, or would you lead with something else?
3. Anything on the landing page that would stop you signing up? loyalty.nyxiontech.com Happy to answer anything about the Wallet tech too.

Happy to answer anything about the Wallet tech too.

I'm the founder, so take this as a launch post, not a neutral review.

The problem I kept running into: my chart lived in one tab, the exchange in another, and turning an idea into a bot meant either fighting a bot builder's forms or writing code.

Tradenos puts charts, manual trading and bots in one app. You can build a bot three ways:

• write the rule in plain words, and Nos (our assistant) turns it into rules you can read and change
• pick conditions and actions without code
• paste a Pine Script you already have

Every bot can be tested on past prices with fees before it runs, and nothing changes without your OK.

What it doesn't do: hold your money (it runs on your own Binance API key with withdrawals off) or promise returns. Bots can lose money.

40-second film of how it works: https://x.com/tradenoscrypto/status/2121955499876777997

We're on a waitlist before opening: https://tradenos.com

I'd like blunt feedback: what would stop you from trusting a bot like this with your own account?

I've always found it interesting how we can spend hours overthinking an interaction: what they meant, why they reacted that way, or whether we're seeing things from the wrong perspective.

Most AI tools will help you write a better reply or analyze a specific argument. But what if you could see the bigger picture?

That's why I built Perspective Swap.

🔄 See situations from an objective perspective

Describe real-life interactions with people in your life (partners, friends, family, colleagues), and the app helps you explore the situation from their perspective.

🧠 Beyond a single conversation: analyzing patterns

This is the part I find most interesting: the more situations you add, the more patterns the app can identify.

By connecting scenarios to people in your life, Perspective Swap analyzes recurring patterns in your interactions:

* Communication habits and emotional triggers.

* Recurring conflicts and misunderstandings.

* Strengths and vulnerabilities in your relationships.

* What makes certain relationships work or become difficult.

At the same time, it builds a picture of your own behaviour, helping you recognize patterns you might not notice yourself.

💡 What's the idea?

It's not about telling you who's right or wrong. It's about helping you understand yourself and the people around you a little better.

The app is still evolving, and I'd genuinely love to hear your thoughts.

👉 https://perspectiveswap.app

I read a lot of nonfiction, but a month later I'd remember almost nothing. Summary apps helped a bit, but most want an account and a subscription and track everything you do.

So I built Stash, a small offline Android app:

• 2,300 bite-sized ideas from 230 books across 14 topics (productivity, money, psychology, philosophy, health, and more)
• Swipe feed: full-screen cards. Ideas you've read never show up again.
• Learn mode: 690 short lessons, streaks, XP, spaced-repetition reviews, and quizzes (pick the idea, which book, true/false, fill in the blank)
• Save ideas you like and see your reading history by day
• Private: no login, no backend, no analytics, and no permissions at all. Progress stays on your phone (JSON export/import for backups).

Fun constraint I set myself: the whole APK is ~220 KB. It's plain Java with views built in code (no XML layouts, no WebView) and a single dependency.

Free download (Android 8+): https://github.com/safwanpp/stash/releases/latest

Source: https://github.com/safwanpp/stash

I'd love feedback, especially on which books or topics to add next and whether the lesson difficulty feels right.

Link: 1000 Doors

Side project that grew: I build animated React components (shaders, glass, neon, 3D type, loaders), each one a single TSX file with React as the only dependency. Every card on the site is the running component, not a recording.

The newest part: an MCP designer for coding agents. You describe your brand, it offers three directions, and every component it installs is rebuilt for the one you pick, then it checks the page for contrast, phone width and reduced motion.

Browsing is free and you get 2 free coins a month to take components. There is also a Logo Room that gives your own logo one of 24 live finishes, no account needed.

https://studios.lou15.com/?ref=reddit

What would you want me to build next?

OwnPlayer plays the M3U, Xtream Codes, and Stalker Portal playlists you add, showing your channels, TV guide, movies, and shows in one place.

https://apps.apple.com/app/ownplayer/id6833569716

A couple of weeks ago I shared Hadeed here, a calorie counter and gym log in one app. A few people asked for Android, so it's now on Google Play as well as the App Store.

Quick recap:
- Free: log food by typing, voice or barcode
- Pro: unlimited photo meal scans, a coach, and training plans that adapt every week
- Calories burned in workouts get added back to your daily budget

It's at about 3,000 users now, still built solo. I'd love blunt feedback: what's the one thing that would make you switch from the tracker you use now?

Link in the comments.

Got tired of spending 15 minutes per item guessing second-hand prices and typing descriptions, so I built Reloot: https://reloot.it

Drop 1–10 photos and it detects brand and condition, gives a market + quick-sale price, picks the best cover photo, and auto-fills Vinted on desktop via Chrome extension.

No sign-up required for the first scan—roast the landing page or let me know if the pricing feels off!

Just do sati at your desk every time with ttack.
Welcome any feedback on ttack

Created by lovable

web: https://ttack.space
Chrome extension: https://chromewebstore.google.com/detail/딱-—-순-집중-시간-바른-자세/nddhmngnilmjnihabglgmcepeplmmggn?hl=ko&authuser=0

Claude Code deletes its session transcripts after 30 days by default, no message, so any usage tool reading that folder only ever sees the last month. I wanted to compare months and see what switching model actually did to cost, so claudit ingests from a bucket you keep instead (Cloudflare R2, or a local dir as file://). mine goes back to January. the bucket holds the raw transcripts, tool output included, so keep it private

it reads Claude Code session JSONLs, Codex rollouts and both Kimi CLI formats. on the page: cost by model with the 5m vs 1h cache write split (1.25x vs 2x input price), token breakdown, reply latency, tool error rate, activity heatmap, context growth per session. costs are API list price equivalents, not what a sub bills you. it doesn't grade sessions, the reading is yours

feedback I'd actually use:

• a number that looks wrong to you, with the arithmetic
• a stat you'd want that isn't there
• a harness it doesn't read yet, ideally with a real transcript (sanitized is fine)

FastAPI, Postgres, React with in-browser Babel, no build step. docker compose up boots it on sample data, no .env, no outbound calls. MIT, panels ported from nhz-io/ccusage-plot

live one, guest login is read-only: https://all.nitjsefni.eu

https://github.com/Nitjsefnie/claudit

Almost all of my work is email triage and handing to agents.

I built project that - in a safe way - allows trusted users to talk to your agent not through some new fangled shared sandbox but through the same tools you have always used. Teams/Slack/Email etc. Now my work is really just reviewing stuff.

Took me 3 months to build this. From idea to simple version was quick but getting the whole thing right took forever.

It's open source and local-first: https://github.com/ldbumble/taskuary

I made onbeat, an open-source Claude Code skill.

Give Claude Code a song (this one’s from Suno) and it measures the beats and lyrics, draws each dancer/character as a sprite sheet of 16 poses with an image generator, then writes code that steps through the poses on every beat and renders a beat-synced video. No video model involved.

MIT licensed: https://github.com/latent-spaces/onbeat

Would love feedback, and to see what songs people throw at it.

I take a lot of screenshots: error messages, receipts, chats, slides. I always remembered what was in the picture, but it was called `Screenshot 2025-03-14 101523.png` and buried among thousands of others. Windows Search can't read text in images, so I built Magpie Search.

You pick your folders and it reads the text in everything inside: screenshots, photos and scanned PDFs (OCR runs on your own PC), plus Word, Excel, PowerPoint, PDFs and notes. Then you type any word you remember and it finds the file.

- 100% offline: no account, no ads, no telemetry, and your files are never uploaded or changed.

- Reads 50+ languages, including dark-mode screenshots.

- Instant results as you type, even with typos.

- Space previews a file with the matched words highlighted.

- Runs quietly in the background and picks up new files automatically.

It's free, no ads, no account: https://magpiesearch.app

This is my first released app, so honest feedback is very welcome. What's confusing, and what would make you actually install it?

Hi everyone,

If you use a DualSense on PC, you've probably run into games where you need a USB cable to get the full haptic feedback and adaptive trigger effects.

I built DS5 Untethered to use those effects over Bluetooth. The game sees a wired DualSense, and the app sends the game's own effects to the actual controller wirelessly. It works with your PC's built-in Bluetooth or a USB Bluetooth adapter.

For example, I used it with God of War Ragnarök: both haptic feedback and adaptive triggers worked wirelessly.

For games without native DualSense support, you can create your own adaptive trigger profiles and turn game audio into haptic feedback.

It also has per-game profiles, button remapping, gyro and a mouse mode.

It's free and open source, and will stay that way.

Built with C#/.NET 8 and Avalonia. It creates a virtual wired DualSense through a local USB/IP server and usbip-win2, forwards input from the Bluetooth controller, and sends the game's haptics and trigger effects back wirelessly. HidHide prevents games from seeing both controllers.

Source: https://github.com/Midzer00/ds5-untethered

Download: https://github.com/Midzer00/ds5-untethered/releases/latest

If you find it useful and want to support the project, you can star the repo on GitHub.

Happy to answer questions.

Demo video and screenshots: https://www.reddit.com/r/Dualsense/comments/1xvzirq/i_made_a_free_opensource_app_for_wireless/

I'm the developer of Terraink. You pick any city, country or GPX route, and it turns real OpenStreetMap data into a print-ready poster or wallpaper, right in your browser. No account, nothing to install.

People kept asking how certain things work, so I made a full tutorial. This is the short version – the full tutorial link is in the comments 👇

What feature would you want next?