Show HN: Ichinichi – One note per day, E2E encrypted, local-first
Summary
Ichinichi is a journaling app that enforces one note per day and disallows editing yesterday. It stores data locally in the browser with an optional cloud sync, and uses end-to-end encryption (AES-GCM) with zero-knowledge. Built with React/TypeScript/Vite, IndexedDB, Zustand, and Supabase for optional sync, it emphasizes privacy and a minimal daily-writing workflow.