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Hey Product Hunt! I'm the maker of KaizenLab — a free hypothesis validation platform for product teams. **Why I built this:** When building products, the hardest part isn't coding — it's knowing whether you're building the right thing. I wanted a structured way to go from "we think this might work" to "we have evidence this works," without scattered spreadsheets and docs. **What makes it...
KaizenLabAI-powered hypothesis canvas to accelerate your PMF journey
A free hypothesis validation platform powered by AI. Structure your team's hypotheses on a Lean Canvas-inspired framework, get AI reviews for completeness and improvement suggestions, and track the Build-Measure-Learn cycle in real time. Features include persona design, interview recording, PMF scoring dashboard, and team collaboration with comments and mentions. No credit card required.
KaizenLabAI-powered hypothesis canvas to accelerate your PMF journey
toshiponleft a comment
Hey Product Hunt! I'm the maker of Focusnest — a free iOS app that helps you create the perfect sound environment for deep work, relaxation, or sleep. Why I built this: As an engineer, I rely on ambient sound to get into the zone. But most apps felt too cluttered, required subscriptions, or needed an internet connection. I wanted something dead simple — pick your sounds, adjust the mix, hit...
FocusnestMix noise and nature sounds to enter your focus mode
A free iOS sound mixer that combines white, brown, and pink noise with nature sounds like rain, streams, campfire, and waves. Save custom presets, use the built-in Pomodoro timer, and enjoy natural 1/f fluctuation — all fully offline. One tap to enter your ideal focus state.
FocusnestMix noise and nature sounds to enter your focus mode
A free BJJ encyclopedia and learning app featuring 175+ techniques organized by position, 9 structured learning paths (6-12 weeks each), and a visual technique tree that maps out your options from every position. Track your progress, search in real time, and train offline — all in English, Japanese, and Portuguese.
BJJ TechniquesMaster 175+ BJJ techniques with structured learning paths
toshiponleft a comment
Hey Product Hunt! I'm the maker of BJJ Techniques — a free iOS app built for anyone who trains Brazilian Jiu-Jitsu. When I started BJJ, I struggled to organize the huge number of techniques in my head. There are so many moves across different positions, and it's easy to feel lost without a clear roadmap. I wanted a single place where I could browse techniques by position, follow a structured...
BJJ TechniquesMaster 175+ BJJ techniques with structured learning paths