Daylo

Daylo is a cross-platform activity tracker that helps you visualize your daily habits through GitHub-style contribution heatmaps.

Built with React 19 and Tauri 2, it ships to 7 platforms from a single codebase: Windows (x64/ARM64), macOS (Intel/Apple Silicon), Linux (deb/AppImage), Android APK, and web browser.

Key features include annual heatmap visualization, monthly drill-down calendars, streak tracking, activity statistics, and full data export/import. The app follows a strict local-first philosophy - no accounts, no cloud sync, no tracking.

The Android APK is built using Tauri 2 mobile support, making this an early adoption of the technology. The project includes comprehensive testing with Vitest and Playwright, and automated CI/CD for all 7 platform targets.