https://www.geraldgmainer.com/en/blog Flutter, offline-first, Supabase and product ownership – from real projects. en Sat, 31 Oct 2026 00:00:00 GMT https://www.geraldgmainer.com/en/blog/offline-first-flutter-supabase https://www.geraldgmainer.com/en/blog/offline-first-flutter-supabase How MoneyKoi works offline-first with Flutter and Supabase: SQLite as the source of truth, an outbox with retries and a single delta sync back from the server. Sat, 31 Oct 2026 00:00:00 GMT Flutter Supabase Offline-First https://www.geraldgmainer.com/en/blog/receipt-scanner-flutter-ml-kit https://www.geraldgmainer.com/en/blog/receipt-scanner-flutter-ml-kit How MoneyKoi's receipt scanner in Flutter reads Austrian RKSV QR codes, extracts line items with ML Kit and per-shop parsers, and checks the total on the phone. Sat, 31 Oct 2026 00:00:00 GMT Flutter ML Kit OCR https://www.geraldgmainer.com/en/blog/supabase-rls-multi-tenant https://www.geraldgmainer.com/en/blog/supabase-rls-multi-tenant Supabase RLS for multi-tenant apps: how MoneyKoi checks the active tenant with a header and a pre-request hook, and secures reads and writes differently. Sat, 31 Oct 2026 00:00:00 GMT Supabase PostgreSQL Security