Notes from a one-person app studio
I’m SiU Ahn. I build small Flutter apps on my own and ship them to Google Play and the App Store. These are the launch stories and the lessons along the way.
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I Built a Simple Attendance Tracker for Group Organizers
A no-frills Android app for tracking who shows up to your recurring meetups, study groups, or club gatherings. Built by an indie dev who needed it.
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I Built a Lottery Scanner App for Korea’s Lotto 6/45
A QR-based lottery checker built specifically for Korea’s Donghang Lottery system. Scan tickets, generate numbers, track winnings, and analyze stats.
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I Built an App to Remember Every Apartment I Toured
Touring multiple apartments and forgetting which had good lighting? I built a checklist app to record, compare, and rate every property I visit.
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Tracking What You Accomplished Instead of What You Didn’t
I built an app that flips productivity tracking on its head: instead of listing what you need to do, it celebrates what you’ve already done.
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Convert M4A Audio to Text and Translate with AI
I built an Android app that turns M4A recordings into text and translates them into 10 languages using OpenAI Whisper and DeepL AI.
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God Finger: Solve Group Decisions with Multi-Touch Magic
I built an Android app that uses multi-touch to instantly pick random people, split teams, assign order, or run reaction games—all offline.