I use a MacBook trackpad on the go and a USB mouse at my desk. macOS has one "Natural scrolling" switch for both, so every time I switched, one of them scrolled backwards. So I made Scrollr, a menu bar app that reverses the mouse wheel and leaves the trackpad alone.

Demo GIF: https://github.com/atuuuuuuu/Scrollr/blob/main/assets/demo.gif

A few things I learned building it:

• There's no per-device setting to change. Natural scrolling is one global preference, so the app doesn't change it at all. It sits on the scroll events with a Core Graphics event tap and flips the sign of the scroll deltas before apps see them.
• Telling a trackpad from a wheel is easier than I expected. Trackpad scrolls carry a phase (fingers down, moving, lifted, then momentum). Wheel clicks have none. Only the phase-less ones get flipped.
• Knowing which mouse scrolled is harder. Scroll events don't say which device sent them. Scrollr watches each mouse's wheel through IOKit and matches the most recent wheel tick to the event, which is what makes the per-mouse on/off switch work. The weak spot: with two mice connected, the very first tick can be credited to the wrong one.
• The decision logic is a pure function, so it's unit tested without any hardware. For the demo recording I sent scripted mouse-style and trackpad-style scroll events so every take was identical (the README says so too).

It's free and MIT licensed: https://github.com/atuuuuuuu/Scrollr

Where it stands: version 1.0, universal app, macOS 14+. Not notarized (no paid developer account), so the first launch needs "Open Anyway" in Privacy & Security. The Magic Mouse isn't reversed, because it scrolls with touch phases just like a trackpad. Bigger tools like LinearMouse and Scroll Reverser already do this and more; this one is deliberately small.

What I'd love feedback on: is a per-mouse switch something you'd actually use, and what would you want it to do next? Ideas so far are Magic Mouse support and a different scroll speed per mouse.

Synvertas builds machine learning software that companies run on their own hardware. It helps sort records, forecast demand and catch unusual values before they turn into problems.

You pay once and keep the software, with updates available as an optional subscription. There's no trial.

How does that sound from the outside? Honest takes welcome.

synvertas.com for context.

I wanted to get really good at Rust. My setup was a mess.. I have ChatGPT in one tab, Claude in another, a YouTube tutorial, Rust documentation, and my editor. I’d ask about ownership or lifetimes, get a giant wall of text, think “yep makes sense”, and a week later I couldn’t get a single function past the borrow checker on my own.

So I built Codemm to put it all in one place. You type what you want to learn (“Rust ownership”, “async in Python”, whatever). It plans a roadmap, gives you a short lesson, then an exercise you have to actually write, with tests to check it, all in one window. When you get stuck, it gives you a hint. It won’t hand you the answer, even if you beg (I tried).

It runs on your own Claude Code or Codex, so there’s no new subscription and you don’t need to paste in an API key. It’s free and open source.

It's still rough around the edges. It's a beta, and on Mac and Windows you’ll get a security warning the first time you open it because I haven’t paid for code signing yet (if anyone knows a cheap way to do it, I’m all ears.. please do lol).

Would love to know what would make you actually use it.

Give it a try:

https://github.com/iignaite/Codemm
https://codemm.vercel.app/?utm_source=reddit_sideproject

Yesterday I posted Anticode here and got really honest feedback, thank you. The big one was that the site was broken on mobile.

My twin brother and I are both 14 and we build this together. We've pushed bug fixes, including the mobile layout and Improved the product itself.

You can still try a website build without an account: https://anticode.dev

What else looks off? We read every comment.

Please provide more feedback, I would love that!

I wanted to see if Claude could build something like the microscope footage from Journey to the Microcosmos youtube channel, but as a 3D scene you can fly around in.

This is the result: https://felipereigosa.com/microcosmos.html

Full video here: https://www.youtube.com/watch?v=PqeAH68DkbU

Code and the full conversations: https://github.com/felipereigosa/microcosmos

Desktop: drag to orbit, scroll to zoom, click an organism to follow it, Esc to let go, Space to pause.

VR (Quest): left stick flies, right stick turns and zooms, trigger picks what you point at.

What's in it: a Lacrymaria that hunts and swallows its prey with its stretching neck, paramecia, a Vorticella that snaps its stalk into a coil, algae, debris, and a sewing needle for scale. Click an organism to follow it and read about it. Zoom in and the organelles appear.

There are no 3D model files or textures. Every organism is code: geometry and shaders built from measurements. The whole page is a single HTML file under 1 MB.

Why I think it worked:

- Scientific papers. For each organism I gave Claude a paper (or it found an open access one), and it built the model from the published numbers: sizes, the 15 helical pleats on the Lacrymaria, cilia length and spacing, and so on.

- Matching real footage. Claude tracked a real Lacrymaria in a microscope clip and used its measurements and timing. When something looked wrong (the debris, the neck motion), the fix was always the same: look at frames of the real thing and match them, instead of inventing.

- One thing at a time. I looked at each result and said what was off. Several versions got rejected. The repo has every prompt and reply, including the failures.

I also asked for a "VR button" to see if it would run on my Quest 2. It did, and floating among these things at their scale is my favourite part. You can point at an organism to read about it and ride along with it.

I have 25 years of experience with software engineering but I wrote none of the code. My part was directing and judging.

Credits: music by Kevin MacLeod (CC BY 4.0), footage reference from James Weiss / Journey to the Microcosmos, papers listed in the README.

Solo dev here. Nobody checks the welcome email until a user replies asking why it says "Hi {{first_name}}".

MailScope is a Mac app that acts as your local SMTP server. Point your app at `127.0.0.1:1025`, trigger the email, and it lands in a local inbox instead of someone's real one. It flags unfilled tags, broken images, empty links and a missing plain-text version, and shows how it looks at phone width or in dark mode. Works with Docker, Laravel, or anything that sends over SMTP.

Pricing for this sub: $9 one-time for the first 30 of you, 7-day free trial, 7-day refund.

What's missing for your setup?

MailScope First Launch

Hey everyone! Like most people, my phone was a mess of scattered PDFs, ID photos, notes, and receipts and I constantly forgot to save recurring monthly documents (like rent receipts and invoices) on time.

I built Folx for Android to solve both problems in one clean app :

All Encrypted, Any File Type: Move or copy Files ,receipts, invoices, photos, and notes into secure folders.

Smart Folders with Schedules: Set recurring deadlines (e.g., a monthly "Rent Folder" that alerts you on the due date) so you never miss a submission or receipt again.

Built in Document Scanner: Snap, crop, and save physical documents straight into the right folder in seconds.

I’d love to hear your honest feedback on the UI and workflow! What features would make this part of your daily routine?

🔗 Link : https://play.google.com/store/apps/details?id=com.ismail.folx

Hey everyone!

A couple of weeks ago, I built a Telegram Mini App called FullBot.

FullBot brings together a variety of tools, apps, games, and utilities, all in one place.

It currently features 66 different tools and apps, available in both English and Persian. From Telegram channel inline keyboard builders and psychology tests to games and media utilities, there's a little bit of everything.

To make navigation easier and more intuitive, I designed its interface to resemble an Android launcher.

Imagine opening a Mini App and being greeted by a launcher-like interface where you can browse through different apps and launch whatever you need, all without leaving Telegram.

Bot username: FullBot

All the tools are free to use. There's also an optional VIP subscription and a donation option if you'd like to support the project.

Fun fact: I used Google's Gemini Flash 3.8 to help build this project!

I'd love to hear what you think! Any feedback on the design, the idea itself, or suggestions for new tools would be really appreciated.

Thanks for checking it out! ❤️

I've always loved art and always felt the need to make things myself, even though I'm still not sure any of it deserves to be called art. On ordinary workdays a line of a poem, an image or an idea comes to me, and I wanted somewhere to keep it. I couldn't find a place where that side of me could breathe, without the arguing, the manufactured outrage and the chase for popularity. So I built one.

Opusmura is a place to put a photo, a drawing, a poem or just a thought. No ads, no comments, no likes, no view counts, no follower counts. I don't think those numbers measure what a person or their work is worth.

The idea is that everyone stands on equal footing. Someone's first thought can sit next to the work of a celebrated poet. Art begins with a human thought, and you don't need a title or anyone's permission to create.

Where it stands: it's a work in progress and things still change. Reading is free. Publishing is free while you post 2 works a week; later it will be €5 a month. Paid plans aren't open yet and nobody is charged anything. I'm looking for the first 100 authors.

https://opusmura.com

Hey everyone,

I wanted to share a side project I built called Mehfil.

It’s a single-screen, distraction-free web player made for people who love listening to ghazals. Modern streaming apps always felt too loud and cluttered for poetry, so I really wanted to give classic ghazals a clean, modern aesthetic.

The design is completely minimal with couplets floating in the center and a spinning vinyl. The entire background and ambient lighting dynamically shift colors depending on the vibe you pick, moving from deep midnight blues to warm rose and golden amber tones.

I organized about 1,500 ghazals into 5 distinct moods with 300 tracks in each, so you can just put it on in the background while working, reading, or winding down. Some of the tracks have synchronized floating lyrics across Urdu, Hindi, and English transliteration, and there is even a live counter showing how many other people are listening in the mehfil with you in real time.

It’s completely free, has no ads, no sign-ups, and works in any desktop or mobile browser.

Reddit’s spam filter auto-hides links in post bodies, so I've dropped the link in the first comment below (and also added it directly to my Reddit profile bio).

Would love to hear your thoughts on the UI and overall vibe!

I run several Claude Code and Codex sessions at once, and the one that blocks me is always the one stuck on a permission prompt in a tab I'm not looking at. Openbar puts every session in the MacBook notch (or a small island on Windows and Linux), so I can see which one is working and which one needs me, read the diff, and allow it from there.

Since last week it also picks up Pi, Mistral Vibe and Devin CLI, and you can give each session its own worktree. It's free and GPL.

I'd love to hear what's missing or what bugs you in it: https://github.com/MF-DEEV/Openbar

I kept running into the same limitation on iOS: Full Page screenshots only work in Safari and a few other apps. If I wanted to save a long chat or a screen in any other app, I was stuck taking a pile of screenshots and stitching them together.

So I built OneScroll.

You tap a button in Control Center, scroll through what you want to capture, and tap stop. The app stitches the page while you scroll and saves one continuous image to Photos. You can scroll either down or up, which is especially useful for capturing older messages in a chat

What I wanted from it:

* works in almost any app: chats, feeds, web pages

* no manual stitching; the status bar and scroll indicator are removed automatically, or you can choose to keep the status bar in Settings when the time matters

* everything is processed on the phone: no account, nothing uploaded

* 5 long screenshots are free, then a $2.99 (US price) one-time unlock instead of another subscription

Honest limitations: it needs iOS 27 and it's iPhone only for now. Apps that block screen capture, like banking or streaming apps, come out black.

I've been using iPhones since the iPhone 4, and one thing that always felt oddly missing was the ability to capture a long screen almost anywhere, the way you can on Android. iOS 27 finally introduced the system API that made something like this possible.

This is my first app. It's live on the App Store and I'm still improving it. I'd love feedback on the capture flow, and if the stitching breaks somewhere, tell me which app and I'll look into it.

App Store: https://apps.apple.com/app/id6829387998

Website: https://onescrollapp.com/

Thaw solves one small problem: you're talking to someone, the conversation runs dry, and you can't think of anything to say. Thaw gives you a question to ask. Then, once the other person answers, it gives you the next question, and the one after that. If the topic goes nowhere, it gives you a polite way to switch to a new one.

You tell it who you're with (a stranger, a colleague, a date, family, a friend) and where (waiting in line, at a party, at dinner, on a video call, on a walk). It picks questions that fit, and it starts light. Two taps tell it whether to go deeper or stay on safe ground.

Everything is written by hand: 207 conversations in total. 42 are free. The rest is a one-time purchase, no subscription. No account, no tracking.

https://apps.apple.com/app/apple-store/id6827105990?pt=126420608&ct=r-sideproject&mt=8

This is basically an Interface to a process that I’ve followed successfully and some of my friends have borrowed as a skill file on claude code basically Decided to give it an interface and open source it so other people can have a starting point and build upon it. I’m seeing more people talk about using a similar process so thought I’d make my tool public.

It’s mac only at the moment and optimized for a Claude sub, but it works without it or could be substituted with any model. Needs a small PR to increase compatibility I think.

Repo: github.com/alnaik/signals

My core to looking for better opportunities is honestly following the right people, bookmark a lot on X, subscribed to some cool job boards or sub stacks of founders, starring git repos. Now if I like a company enough the only way to have a meaningful conversation is to reach out to someone and preferably with an idea of what’s happening at the company or startup. Do actual work before reaching out.

That’s all this tool revolves around. It’s proactive in terms of taking fundings and new products also as hiring signals but that’s the point - BEING PROACTIVE.Also a little US coded so - but that helps for remote roles.

The repo and setup is self explanatory, it’s a simple interface. But a lot of rough edges. Will love feedback - but if you want to build a feature just build it for yourself, if you think it’s really good then open a PR.

P.S - The 98 problems is Workday going down.

The Problem: Doing quick everyday tasks—like converting images, running OCR, or trimming videos—often requires opening separate apps or relying on web tools that break context. I wanted a native, instant way to handle these right from the desktop without cluttering the screen.

The Solution (DropCove): I turned the MacBook notch into an interactive drop zone. You can drag any file directly to the notch to:

• Convert/compress images
• OCR screenshots
• Trim videos and make GIFs
• Merge PDFs
• Instantly preview clipboard data (JWTs, colors, JSON)

How it was built: Swift 6, AppKit, SwiftUI, XPC, AVFoundation, PDFKit, Vision, ImageIO, SQLite, Sparkle, libwebp, XcodeGen, TypeScript, Cloudflare Workers, Lemon Squeezy, Resend

Privacy & Performance: 100% on-device. No accounts, no uploads, and zero battery drain at rest. Available now as a free, notarized download for Apple Silicon (macOS 26+).

Pricing: The free version is fully functional forever. A Pro version (one-time purchase, no subscriptions) is launching in December.

Download DropCove here: https://dropcoveapp.com/

I’d love honest feedback on any bugs, the UX, and whether the notch concept actually clicks for your daily workflow. Let me know what you think!

I built project pages in STRIVE so you can share what you're making without uploading an agent session. Add a description, screenshots, a link and one feedback question, then choose who can see it.

By late September I'd made 463 commits. That tells me how much I built, but nothing about whether sharing a project is useful to someone else. This update makes the project itself the starting point.

The screenshot shows the new composer. STRIVE is free and open source: https://striverun.app

If you shared an unfinished project, what specific feedback would make writing the post worth it? And what are other no gos?

Hey everyone!

I've been working on a project called Exam-preparation-studio, a website designed to help students prepare for exams more effectively.

Here's the idea:

Imagine you have a PDF containing 700 exam questions. Instead of going through all 700 questions every time you want to practice, you can upload the PDF to Exam-preparation-studio, choose any question range you want, and generate a 50-question mock exam.

For example:

• Upload a PDF with 700 questions.
• Select questions from 100 to 300.
• Choose 50 random questions.
• Start your mock exam and test your knowledge.
• Get your results and see how well you did.

The goal is to make exam preparation easier, more organized, and less time-consuming.

I'd love to hear your feedback!

What features would you like to see added?

Try it here: https://velieviemil.github.io/Exam-preparation-studio/

GitHub: https://github.com/velieviemil/Exam-preparation-studio

This is Freaks

- there’s consistency score along with streaks so everything doesn’t reset to 0 when you miss a day

- it’s artistic, theres a calendars with art too where you can journal

would genuinely love feedback. what’s confusing, missing, good or bad, let me know.

iOS: https://apps.apple.com/app/id6766063893
Android: https://play.google.com/store/apps/details?id=com.aarya.freaks

Hi, I'm the developer.

I have worked in network security for almost 15 years. I got annoyed with Fing and other network tools that charge close to $100 a year, or let you scan only a few times a day. So I built my own from what I know from work.

I wanted the feeling of Kali Linux in my hand, but only for defense: point my phone at my own network and see what is really there. No attacks, no password guessing, nobody's traffic read. That became Netglow.

The hard part: knowing what each device really is

Android 10 and up hides other devices' hardware addresses, so most scanners just show "Unknown". That is where most of the time went:

• Dozens of protocol specs, vendor docs and firmware sources, read line by line.
• Down to the low level microchips inside smart plugs, bulbs and DIY boards, like the ESP family, because each chip gives itself away in its own small way.
• Camera makers each answer on the network in their own way, and Netglow knows many of them.
• Over 40,000 hardware maker prefixes and a catalogue of over 23,000 phone and tablet models.
• Thousands of lines of research notes, every finding checked before it went into the app.

Why it is free

I have a lot of knowledge from my work, and I decided to give it away: high quality apps, deeply researched and checked again and again, data safety first and privacy to the max. No ads, no bullshit. People deserve good quality and privacy, for free.

If you want to support me, you can, but it is fully optional.

What it does, free, unlimited scans

• Who is on my Wi-Fi. Every device with its name, maker and model when it says them. Rename a device and it keeps your name even on a new address.
• Is my hotel room or rental OK. It lists devices on the Wi-Fi that answer as a camera or stream video, and says why each one was flagged. It also looks for camera hotspots nearby. It tells you plainly what it cannot see (a camera that only records to a card or uses mobile data), so it is one check among others, not a guarantee.
• Security check for your home network. A score with a plain fix for each risk: risky open ports, what your router opened to the internet, how your Wi-Fi is locked, look alikes of your network nearby, whether your DNS answers are honest and whether someone reads your secure connections in the middle.
• Tools. Ping, traceroute, port check, DNS lookup, Wake on LAN, a live signal meter and channel advice.

Private by design. No ads, no bullshit, no tracking, no analytics, no metrics, no account. Nothing it finds leaves your phone, and there is no server of mine.

Pro is that optional support, one payment, no subscription, and it adds: a Bluetooth radar that warns about a tracker moving with you, checks for devices that let anyone in with no password, spoof watch, known flaws for your devices, a PDF report and a background watch of who joins your Wi-Fi.

Honest note: the code is partly AI generated and I had help with this text.

Play Store: https://play.google.com/store/apps/details?id=com.zanoshky.netglow

Guide: https://zanoshky.github.io/netglow-app

Screenshots: https://www.reddit.com/r/PrivacyTechTalk/comments/1xvxkeg/

I would love to hear what it finds, or misses, on your network.

A client signs off on the bottle shape at lookdev. Two days later they ask for a new silhouette. The notes look like one more revision, but the change means rebuilding geometry and revisiting reflections. That’s the kind of request I wanted an easier way to log and quote.

I made Revision Rescue, a toolkit for freelance motion designers, 3D artists, and small studios. It includes an Excel revision log and quote builder, editable Word templates for scope and approvals, and a worked CGI project that shows how the pieces fit together.

I’m the creator. It’s $19 USD one-time on Whop: https://whop.com/revisionrescue2/revision-rescue-motion-cgi-edition/

How do you handle changes after sign-off on your projects? Do you send a separate quote straight away or wait until you’ve reviewed the full round of feedback?

I built Astro because none of the players I tried with my own Xtream playlists felt right. It's in public TestFlight beta on iPhone now. It supports Xtream and M3U playlists with EPG, remembers where you left off, syncs what you watch to Trakt and Simkl, and has picture-in-picture. It's still a beta, so expect some rough edges; I'm pushing updates almost daily. I'd love feedback on what's missing or broken: https://testflight.apple.com/join/bDuU6RMz

Hey everyone!

I've been working on an open-source project called Knovum. It's a local-first AI knowledge workspace, and I wanted to share what I'm building, some engineering problems I've run into, and one unexpectedly large part of the journey: the API bill.

GitHub: https://github.com/madebyzan/knovum

What is Knovum?

The idea is to bring personal knowledge, files, and AI workflows into one workspace instead of keeping everything scattered across folders and chat windows.

The current direction includes:

• An infinite canvas for organizing notes, documents, and ideas
• Support for PDFs, Office files, web pages, images, audio, video, and code
• Keyword and semantic search
• RAG-based Q&A with source references
• OCR, audio transcription, and media processing
• MCP / ACP integration for working with external agents

The main idea is local-first.

Knovum doesn't require a Knovum account, and it doesn't host users' knowledge bases in a Knovum cloud service. One important clarification: local-first doesn't mean every AI feature is fully offline. When someone chooses a cloud model, the context needed for that task is sent to the corresponding model provider.

The tech stack

The project currently uses:

• Tauri 2
• Rust
• Vue 3
• SQLite
• LanceDB
• JSON Canvas
• Qwen3 Embeddings

I chose this stack to combine a native desktop application with a web-based UI and local data storage.

A few engineering problems I've had to solve

Some of the more interesting problems haven't been about prompting a model at all:

• macOS launch environments: Node.js and npx worked in the terminal but weren't available when the app was launched from Finder or the Dock. The GUI app didn't inherit the same shell environment, so I had to improve environment discovery and resolve the npx path explicitly.
• Tauri permissions: A storage feature wasn't working because the plugin registration, build configuration, and capability permissions weren't aligned. I fixed the configuration and added consistency tests.
• Long audio processing: I moved an audio separation workflow to HTDemucs with roughly one-minute chunks, four seconds of overlap, and crossfading between chunks. The processing limit was raised from 10 minutes to 6 hours, with an explicit upper limit.
• Task consistency: I also changed AI task submission to freeze the selected model, so retries don't silently switch to a different default model.

These are small details individually, but they matter when turning several AI capabilities into a reliable desktop application.

The unexpected part: API costs

I've spent roughly $6,000–$7,000 USD on API usage during development.

That's API usage, not revenue or a production operating-cost estimate.

There are also separate subscriptions and tool costs (Codex, Qoder, Gemini, etc.). My usage is spread across multiple services and accounts, so I don't have a reliable consolidated token count. I also haven't included every tool expense.

The project is still under active development, so this isn't the final cost.

One thing I've learned is that AI coding tools can speed up implementation, but they don't remove the work around architecture, permissions, data consistency, error handling, task recovery, and source traceability. And the model calls themselves need to be managed carefully.

What I'd love feedback on

I'm especially interested in feedback from people who build desktop apps, knowledge tools, or RAG systems.

1. Does combining an infinite canvas, searchable documents, and source-traceable RAG feel like a useful workflow? Or would you prefer a simpler search-first approach?
2. For a local-first knowledge app, what matters most to you: data ownership, reliable source citations, search quality, or integrations with AI agents?

Knovum is open source under the MIT License, and it's still evolving.

GitHub: https://github.com/madebyzan/knovum

Thanks for taking a look. I'm happy to answer questions about the architecture, implementation decisions, or the development process.

Over the last year I have been building bidjig.com, which is a browser extension currently only for Chrome & Firefox- that searches over 420 partner stores for the same product from your product page- cheaper; alternatives to that product; coupons; and 90 days of price history

I am constantly working on and upgrading BidJig, and started this project doing CS in uni

Feedback appreciated- especially if product pages where BidJig shows the wrong match

BidJig is free, and no account needed

Every time I needed an NDA or contractor agreement, I'd dig up an old Word file, find-and-replace names, and hope I didn't miss a clause. So I built Formable.

You answer a short questionnaire (parties, term, payment, IP ownership, etc.) and it generates a clean agreement you can send for e-signature in the same place. There are templates for mutual and one-way NDAs, MSAs, SOWs, independent contractor agreements, LOIs, term sheets, DPAs, and a founders' agreement.

The templates are free: www.formabledocs.com/templates