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It might sound like a very niche problem, but I was constantly wondering: “Wait… how long have I had my tampon in?” I used to set random alarms, check the time, forget to start them, or end up doing mental math during my period. Eventually I got tired of it and decided to build an app myself. Mavie lets you start timers for tampons and menstrual cups, sends reminders, suggests recommended usage times based on your flow and absorbency (while still letting you customize everything), and le...

Been building this for a while, you can trade tokenized us stocks and etfs and gold with usdc, attached the deposit screen because thats where most trading apps hit you with the drivers license and selfie upload, we skip that entirely. crypto deposits work right now, google pay apple pay and card are landing soon, no kyc on any of them. looking for people who will actually use it and tell me where it breaks, not the polite "looks cool" kind of feedback but the honest "this par...

Hi everyone I built a platform that connects you to angel investors for your startup. Over 1200 angel investors/advisors from twitter and LinkedIn use our platform. Platform is free to join. comment what your startup does to get free access.

I've been building PlopKit, an open source comment system that can be embedded into any website. It's made for people who want comments on their website without visitors having to sign up to leave a comment. It has moderation tools such as: Accepting or rejecting incoming comments Automatically accept comments Banning certain words And many more in the future I've been building this in private for around two months now, and I figured I might as well share what I have so far and g...

Built a small tool earlier this year and decided to treat Reddit as my only distribution channel for the first 6 weeks. No ads, no newsletter, no Product Hunt. Just Reddit. I mapped out 23 subreddits where the problem my tool solves actually comes up in conversation, made a posting schedule, and started tracking everything in a spreadsheet. The results were genuinely weird. The subreddits with long rule pages, active mod teams, and karma requirements that made me nervous to post in? Those drov...

I spend a lot of time with an AI coding agent running in the background, and I kept missing the moment it finished or stopped to ask me something. So I built Emberglow it lights up my Keychron Q10 based on the agent's activity, over the VIA protocol (QMK raw HID). Four states: - 🔵 Working — pulsing blue - 🟠 Needs you — pulsing orange (agent stopped to ask a question) - 🟢 Done — flashes green, then restores your normal lighting - 🔴 Failed — solid red

Honestly this started at like 2am 😅 I just wanted to format some json, and every site I clicked had three ad banners, a cookie popup, and a "sign up to continue" wall for a tool that does literally one thing. Kind of lost it that night. So I've been building my own the last few days and it sort of turned into a monster lol. It's at yourhack.ai, around 680 tiny single-purpose tools now (calculators, converters, text stuff, a bunch of dev/crypto/network ones) and they all just run in y...

ok so this whole thing started because i kept asking chatgpt stuff and realising it just agreed with whatever i already wanted to do. like id ask should i do X or Y and it would basically back my lean every time. felt like a yes-man, not a second opinion. so i built the thing i actually wanted — war table. you ask a question and 5 models (claude, gpt-5, gemini, grok, qwen) actually debate it across a few rounds, take opposite sides and poke holes in each others reasoning. then a hidden chairma...

Drop your link + one-liner below and list it on CLAPSTORM, the free weekly launch leaderboard I just built. Every listing gets a permanent product page with a dofollow backlink. Full disclosure: it's brand new and will be filling the board for the premiere round. Listings join this week's round, where the top 3 get hall of fame status and #1 gets a published article. No pay-to-win, ever. I'm going to be spending the next few months growing the domain rating so the backlink means something. ...

Hi everyone, I’m an independent iOS developer and I wrote ITNRY because i couldn’t find what I needed on the AppStore. The idea came from years of traveling for work. Every travel app I tried was either bloated or wanted me to create an account, upload my travel plans, pay a subscription etc. So I built the opposite. ITNRY is: - Feature rich, but each has a purpose - A one-time purchase - Without subscription or account - Not tracking you nor gathering your data - Your data stays ...

I built a social app SocialHuman where only human-made content can exist. Every photo and video has to be captured inside the app, and each one runs through a verification pipeline (sensor data, EXIF forensics, screen-recapture and moire detection, device attestation, and a few others) before it goes live. The goal was a feed where AI images and reposts basically can't exist. Six weeks later, here is the honest scoreboard, all pulled from production today: Growth - 0 to 245 users - Sig...

Solo dev here. Shipped my first app a few weeks ago (a daily Stoic quotes app) and have been grinding marketing every day with $0 to show for it. Today I went for a run. Came back, checked my phone — and there it was. My first transaction ever. Someone bought the Lifetime unlock while I was out running. I know one sale isn't validation. But a stranger on the other side of the planet paid for something I built alone in my room. I've been smiling like an idiot for an hour. Keep shipping. (...

It feels slightly crazy even writing this - I had an idea in 2007 just after the first iPhone launch - having been to a number of weddings that year I wondered how people get their guests photos after the event. After a bit of sketching and prototyping I registered Sharetheirday.com, realised it was going to take more skills that I had right then and life got in the way, so I put it away in the box of ideas I’d come back to one day (but still paid the domain fee every year). In 2012 I actual...

Your birthday, as four digits (in fact any 4 digit number that you love or hate), is sitting somewhere in the first 250,000 digits of π. It was there before you were born. I built a site that flies you to the exact spot. Type your digits, fly through a sphere of a quarter million dots, land on your number. Everything runs in your browser, nothing gets logged. Tell me if you could not find it! 😉

I just released a free-to-play web game, WebSailing. You can sail the endless seas while your agent does its thing in the back. currently, theres two game modes, Chill and Vibe. In Chill, you sail endlessly (much like slowroads) and just explore the sea and find islands and fjords. in Vibe, connect your Spotify or upload a song and just watch how the waves vibe to the frequency of your song. Theres dozens of features i have impemented that you will have to figure out for yourself. Your ...

Hey everyone! I've been trying my luck on a few side projects for the past few years and, as you can guess, I had to figure out how to promote them. This meant doing a ton of research and reading a lot and, well… 90% of the resources you’ll find are pretty useless, too vague and not actionable, with just a few exceptions here and there. So I started to collect the best guides, templates, examples, and a few tools in a GitHub repo. It covers topics like: Places To Launch Your Startup ...

I’ve been building this little web thing that turns a Steam library into a walkable retro game shop. Mostly made it because I miss the feeling of browsing game boxes instead of scrolling through a grid. It uses the games from a Steam profile and puts them on shelves inside a small 3D store. It’s still rough, but I’m trying to figure out if the idea is actually fun or just a cool one-time gimmick. Would this make you look at your backlog differently?

For the past 5 months, I've been building a tool that creates beautiful explainer videos with clear, structured explanations. Today, I'm finally excited to share it. It can turn almost any document into an engaging explainer video: • Documentation • Articles • Research papers • PDFs Built for companies, teams, educators, and students. You can try it for free at distilbook(.)com

So I built an app called RatMap. You see a rat in the city, you name it, and it goes on a live map. Yeah that’s pretty much it… Still under 100 rat enthusiasts on the app, but people are now posting rats daily. There’s a feed. There’s a leaderboard. There is a rat named Paco standing on a subway platform looking absolutely stunning who has 6 likes and is currently one of the most famous rats in the app. You can like rats, comment on rats, and even like comments on rats; a real dream come tru...

Add a product to a Shopify store the default way and the whole page reloads. The shopper is looking at your product, they click Add to cart, and the browser throws the page away and rebuilds it. On a

PDF files are one of the most widely used document formats for sharing reports, invoices, contracts, books, research papers, manuals, forms, and business documents. Although viewing a PDF is simple, u

Artificial intelligence has moved far beyond simple chatbots and basic automation. Today, developers and non-developers alike use AI tools to research information, write content, create presentations,

In this tutorial, I'll show you how to build a private local RAG-powered Q&A AI agent for your personal documents using LangChain v1, Ollama, Qwen, and Python. The agent reads your documents and answe

Your AI product experiment reaches statistical significance on day 14 of a planned 30-day run, measuring a causal inference question: did the LLM-based feature genuinely improve outcomes? Every produc

AI coding assistants have evolved from simple autocomplete tools into capable development agents that can write code, debug applications, refactor projects, and even execute complex workflows. Among t

Managing dates and times in JavaScript is notoriously tricky, often leading to subtle bugs that only surface once an application hits production. To help you master this fundamental skill, the freeCod

Picture this: you hit an API endpoint, and you get an API response back. You pass the data straight into your application, and everything looks fine in development. Your mock data is clean, your types

Have you ever tried to spot the differences between two long paragraphs of text? Reading line-by-line to find a missing word or a new sentence is a massive headache. In this tutorial, you'll build you

Recently, I wanted to reinvigorate my open-source project Clarity, an icon theme for Linux (GTK+). The icons allow users to create custom colors by adding SVG templates. And I wanted to have a platfor

If you're a developer, you likely work with JSON a lot. But how do you define and validate JSON and prevent problems from malformed JSON data? This article explores what a JSON schema is, some example