Day 13: UI polish, app icon, billing live, and Play Store listing

A full day of UI polish and Play Store prep. Nine UI issues fixed via Claude-prepared Gemini prompts, new app icon designed in Affinity Designer, in-app billing tested end-to-end, and the store listing copy and screenshots completed. Tomorrow: feature graphic, tablet screenshots, and a permission demo video.

April 20, 2026 · 6 min · Karl-Ernst Kiel

Day 12: Freemium gate, billing, Play Store registration, and first internal build

The freemium gate and Google Play Billing integration landed today, completing Phase 2. Then a pre-beta cleanup pass, privacy policy, Google Play Developer account registration (surprisingly complex), demo playlists, screenshots, a first app icon, and the first internal build installed on a real device via the Play Store.

April 19, 2026 · 8 min · Karl-Ernst Kiel