Why I built these projects, and how I thought through them.
DiveCut
An iOS video editor for freedivers that syncs a dive computer's FIT log to your footage and burns in a depth gauge HUD, depth, dive time, and heart rate, plus underwater color LUTs tuned for how water eats red. Everything stays on device, no account, no upload, pay once. Live at divecut.freediver.space.
freediver.space
A dive log that turns the raw FIT file from a freediving watch into the things that actually matter, how long each dive was, the best one yet, how deep you went, how your heart rate fell through the descent, and whether the mammalian dive reflex fired and when it kicked in. Built so a diver can finally see progress instead of a wall of numbers. Live at freediver.space.
STAmaster
A dedicated Static Apnea training app for freedivers, with CO₂ and O₂ tables, AI-generated training plans, and live SpO₂ plus heart rate streamed from a Lepu pulse oximeter during the breath hold. Built to train with data instead of a stopwatch, and it took my own hold from 2:00 to 3:30. Live at stamaster.freediver.space.
Swimiss Academy
A freediving academy that also teaches swimming, scuba, and more needed one system to run enrollment, sessions, instructors, affiliates, and student progress. Built from scratch as a web platform plus a mobile app, live at swimiss.com.my and app.swimiss.com.my.
FSpend
After leaving a CTO role to return to hands on contract work, the lack of a simple accounting tool for independent contractors in Malaysia led to building FSpend from scratch.
myjiran.com
A non finance engineer, embedded inside the problem as treasurer, built a trust platform from scratch with zero AI, zero budget, and zero guarantee of payment, and transformed a community's financial behaviour.