A developer frustrated with bloated journaling apps created Ichinichi, a minimalist daily note-taking tool that limits users to one entry per day. The app prevents editing past entries, forcing users to focus on current thoughts rather than obsessing over yesterday's words. This read-only constraint turned out to be the feature that made the creator stick with journaling.

Built with React, TypeScript, and Vite, Ichinichi stores data locally using IndexedDB and offers optional cloud sync through Supabase. The app includes end-to-end encryption with AES-GCM, ensuring privacy without requiring user accounts. A year view displays writing streaks through simple dot indicators, creating visual motivation to maintain the habit.

Available as a PWA on Cloudflare, Ichinichi opens instantly without signup and works entirely offline. The name means 'one day' in Japanese, reflecting the app's singular focus. By stripping away folders, tags, and templates that complicate other journaling tools, Ichinichi solves the creator's own problem: making daily writing simple enough to actually do.