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I built a countdown app in my spare time, and it's on iOS, Android and web now.

I do marketing for a living. I can read code and I've done web work for years, but I never got round to learning Swift or Kotlin properly. Never had enough time to dive into it. So my list of apps I wanted to make just sat there getting longer. This year I took one off the list and actually finished it, which still surprises me a bit. Byna : it's a countdown app. Before anyone says it: yes, there are hundreds. I picked this one because it was the smallest idea on the list, and because the t...
Reddit

20.07 - Bluetooth mesh app for coordinating with your group, send SOS and sharing incident photos — when networks are unavailable or jammed. (Open source for collaboration)

Built for a specific, recurring problem: a group that needs to stay together, and a network that can't help them do it. Solution- find your group on a compass-rotated radar, send an SOS others can navigate to, and flood-relay evidence photos across the mesh so they're not stuck on one device. The tool- Inspired with Permissionless-Bitchat, No accounts (groups are just a random key in a QR code), rotating BLE identifiers so you can't be fingerprinted, everything self-destructs on a built-in e...
Movie Streamer - Stream movies from torrent (macOS app)
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Movie Streamer - Stream movies from torrent (macOS app)

I have been building this app for over a month, refining and improving it. Looking for feedback, feature suggestions, and monetization strategy suggestions. Will anyone be willing to pay for this app outside of apple app store? If anyone is willing to buy please DM, will try to sell in fair price personally. Movie Streamer lets you stream files as they download — just search, pick a quality, and hit play. Seamless unified experience What it does: - Stream-as-you-download with smart ...
Reddit

Launched my reading app after 3 months of solo building — 4 things I wish I knew earlier

Solo founder here (mom of two, self-taught engineer). I spent 3 months building a reading app that adapts books to different reading levels and languages, and launched this month. Four lessons that cost me the most time: Copyright is country-specific. "Public domain" in one country isn't public domain in another — some go by the author's death year, some by publication year. I had to check my starting catalog title by title. Don't compete on catalog size. Big platforms will al...
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I taught myself AI after work, took a product to Google Play, and won a contract as a solo builder against established teams. Here's the story.

No CS degree, no traditional tech pedigree. I taught myself AI the slow way: daily reading, experimentation, prompt engineering, and building after long shifts in an emergency-services career. It started as a food-ranking side project. Then I found engine recipes documented in PDFs, and it slowly became something bigger: OnTheRice (new.ontherice.org), a daily AI market and news read with a public proof ledger that timestamps every call so the misses stay visible, not just the wins. Along the...
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A stranger emailed me a two-line bug report and I've read it more times than any analytics screen

​ I've been staring at dashboards for months. Downloads, signups, retention, all of it mostly flat, all of it quietly making me feel like I built for no one. Then last week someone I've never met sent me an email. It wasn't praise. It was a bug report. Two lines, describing exactly how something broke and what they expected to happen instead. And I got weirdly emotional over it. Because a number tells you a session happened. A bug report tells you an actual person cared enough abo...
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Looking for ideas

Am a student developer learning to develop applications, and I am seeking to develop a small application that will be useful to people. The only problem is, I have no idea what to pursue. Why don't you guys tell me? What do you think would be a great wish for a software tool or application for fixing a certain problem in your day to day life?
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I built a daily debate platform where new topics expire every day and the most upvoted arguments win. looking for people to test it

I've been working on argumdebate, a new platform built around short, daily debates. The idea is pretty simple: Every day, new debate topics are published covering things like politics, technology, society, culture, entertainment and other controversial subjects. You choose a topic and share your argument. Other users can read the different opinions and upvote the arguments they think are the strongest, most convincing or interesting. At the end of the day, the topic closes and the argume...
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Crossed 13k this month and the tools are free.

Crossed 13k this month and my whole stack is basically free. heres how SWE here, bootstrapped, allergic to paying for stuff i can get free. crossed 13k this month and my monthly tooling bill is almost nothing. heres how the free/cheap stack actually holds up. the foundation: -Neon Postgres : generous free tier, never hit the ceiling -Vercel : free hobby tier carried me way longer than i expected tbh -Velobase : my framework, fully open-source and MIT, $0. this is the big one. instead o...
Front page of HN for my Voice driven murder mystery
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Front page of HN for my Voice driven murder mystery

Hey!! Just wanted to show off this cool project I made. I posted it on Hacker News last night https://news.ycombinator.com/item?id=49238851 Essentially, it resulted in me losing $5 every 10 minutes so far, currently $200 down the drain This is AI powered conversations using gpt-realtime-2
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Built an exam prep platform as a side project

Hey folks, I’m an engineer based in Australia, and over the last couple of months I’ve been building a small side project called ExamsNext. The idea was simple: certification prep is still very fragmented. You buy random question banks, PDFs, Udemy courses, notes from Telegram groups, etc. I wanted to build one proper platform where someone preparing for AWS/Azure/security certifications can practise questions, revise with flashcards, take mock exams and track progress. So I built it. Cu...
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Transaction dates turned out to be the hardest “simple” feature in a shared finance app

I’m building Ledgerly, an open-source finance app for personal, family, and office-style workspaces. The basic model sounded straightforward: transaction, account, category, amount. Then a real edge case showed up: someone enters a transaction today, but the purchase happened last month. If the app uses entry time instead of occurrence date, reports become misleading. Once shared workspaces are involved, the same record may also need payer/contact context, permissions, claims/approvals, and an...
I created a Bookmarklet Game with approximately voice chat for any website - Metaverse?
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I created a Bookmarklet Game with approximately voice chat for any website - Metaverse?

Hey! I’ve been building SecondWeb/Web3D.World or the Metaverse?! You drag one bookmarklet into your browser, open any website, and click it. The page becomes a low-poly multiplayer city: DOM elements become landmarks, every URL is its own P2P room, and players can walk, drive and use spatial voice chat. The idea is to turn the internet from pages we consume into places where people meet and make every website a game level waiting to be explored and conquered. It’s still an early prototype,...
I built Spotify Wrapped for your PC
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I built Spotify Wrapped for your PC

Imagine if you could view your entire digital history through recaps, eras, and nostalgic timelines. Thats what PC Recap does, it turns your PC into a shareable digital time capsule with milestones, events, and more. Download at https://pcrecap.online
What if your phone got progressively more annoying the longer you used it?
Reddit

What if your phone got progressively more annoying the longer you used it?

I posted Stop Swarm here recently and got a lot of really useful feedback from this community, so I’ve spent the last few days reworking it! The basic idea is still the same: set a daily screen-time goal, and once you get close to it, pixel-art elements gradually invade your screen. It’s an Android app built in Kotlin using a click-through system overlay and a foreground service. Everything stays local on the device: no account, no analytics, and no network connection. Still very much a si...
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How do you handle stress ?

Hello, I created a side project and it's going fine. But my main problem is stress. Stress when i get less google search results Stress when i get bad reviews on trustpilot unfairly Stress when competitors take over on google Stress when i earn less money some days or weeks... Stress when ads don't run well .... I sometime feel like it's not worth it. How do you handle this ? Am i caring too much ? Thanks ... [link] ...
Reddit

Show us your side project! What are you building right now?

What's everyone building these days? Drop your project below and tell us what it does. I'll start: I'm building Eyondo, an AI video and image studio. One thing it does that most tools don't: drop a single photo of a person or a product and it renders them across every angle you need, same face, same lighting, same outfit. 40 image and video models in one box. https://eyondo.com/ Your turn!
I built a physical button for capturing notes without unlocking the iPhone
Reddit

I built a physical button for capturing notes without unlocking the iPhone

I’m Ryan, founder of SpeakON. I kept losing thoughts in the few seconds it took to unlock my phone, find an app, and start recording, so I built a hardware-triggered capture flow instead. The video shows the current version: with the iPhone locked, one press starts voice capture and the result is saved as a Note for later. The part I’m still testing is whether a separate physical trigger removes enough friction to justify carrying another object. If you already use the iPhone Action Button o...
Reddit

Drop your product below. I’ll find promo-friendly subreddits for you and draft your posts for free (I need case studies)

Hey everyone, I’m building Reddlist, a curated database of subreddits where your promotional posts actually survive - meaning no immediate takedowns, shadowbans, or angry mods. Right now, I want to prove that this list works to drive paid users to startups, not just vanity metrics. To test this, I want to do the heavy lifting for a few of you for free. If I pick your product, I will: Dig through Reddlist to find the most high-impact, promo-friendly subreddits for your niche. ...
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I built a website I genuinely hope nobody ever needs

I finally put something I have been thinking about for a long time out into the world. Its called Dear Stranger. The idea is pretty simple, you can anonymously write a letter to a complete stranger, and someone else can come across it when they might need to hear those words. There are no accounts, no followers, no likes, no ads. I didnt want to make another social platform. I wanted it to stay as simple as possible, one person writing something, another person reading it. The actual devel...
How to Get Your Side Project Seen and Gain Paying Users
🌍 FreeCodeCamp

How to Get Your Side Project Seen and Gain Paying Users

In 2022, I built a small micro-SaaS in my spare time and eventually sold it for a few thousand dollars. And today, with AI tools, it probably would've been even easier to build. But what has changed d
How to Add Dynamic Features to a Static Site Without a Server
🌍 FreeCodeCamp

How to Add Dynamic Features to a Static Site Without a Server

Static sites are having a moment, and it makes sense. A folder of HTML, CSS, and JavaScript files is fast to load, cheap to host, and very hard to break. Tools like Astro, Eleventy, and Hugo build tha
After months of averaging 1-2 users per day, one tiny change suddenly brought us 400+ users
Reddit

After months of averaging 1-2 users per day, one tiny change suddenly brought us 400+ users

My husband and I launched Glance (a full year calendar app, synced with Google) back in April 2025. Growth has been a lot slower than we had hoped, but we haven't spent any money on ads and are only able to dedicate a few hours per week as it's "only" a side project and we're working full-time jobs. Over the past few months we finally got to the point where we were consistently picking up around 1-2 new users a day organically. It wasn't exactly something to write home about, but aft...
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We built a salon booking SaaS, but we’re questioning whether the problem is painful enough. What would you change?

My cofounder and I are building a booking SaaS for salons and beauty businesses in Bahrain. The product lets customers book through a dedicated salon link, while the business manages appointments, services, staff and availability in one place. The product works. The harder part has been convincing businesses to change what they already do. We’ve spoken to a lot of local salons. Some already use booking software. Some are mostly walk-ins. But many still manage appointments using Wh...
Fun Airport Codes ✈️
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Fun Airport Codes ✈️

I picked some fun IATA codes — the 3-letter codes used for airports, like LAX and JFK — and made a little site for them. Know any good ones I should add? https://pikpin.app/iata/
Reddit

I made long tasks call your phone the second they finish or get stuck, so you stop babysitting them. 100 signups in 2 weeks.

The itch that made me build this: you start something that takes a while, a big export, a long build, a migration, and then you're trapped. Either you babysit the screen doing nothing for 20 minutes, or you walk away and come back to find it stalled an hour ago waiting on one decision you never saw. So I built Call Me. The moment the job finishes, or the second it's blocked and needs your call, your actual phone rings. A voice tells you what happened, you answer out loud with what to do next, ...
Built an app where you take a photo of any uk property and it tells you what it’s on sale for.
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Built an app where you take a photo of any uk property and it tells you what it’s on sale for.

My wife and I love looking at house prices. Every time we walked past a for sale sign we'd stop and look the house up, so I built an app for it. You take a photo of any UK property and it tells you what it's on sale for, or when it last sold and for how much, without having to search for it all yourself. Just a faster way, I thought. Feel like some people might like to use it too, unless me and my wife are just a bit strange, I dunno. It's called PicAHome, it's on the App Store now if anyone...