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Saju
A fully offline mobile app that reads your Four Pillars, five elements and fortune from your birth date. The lunar-calendar math and the readings all run on-device, with no server.
Screenshots
About this work
Enter a birth date and time and the app reads your Four Pillars, five elements, daily pillar and fortune. It is fully offline: no network, no account, no ads, every calculation on-device.
Features
The lunar-calendar engine converts between solar and lunar dates and derives the pillars from solar terms (lunar-typescript). It reads out elemental balance and daily luck.
For tarot, all 78 cards and the reading-history store are in place. The draw and interpretation screens are not built yet.
Notifications go through OS-level local alerts, with no FCM server behind them.
Stack
Capacitor 6, React 19, Vite 6 and TypeScript. Data is stored on-device through native filesystem and IndexedDB adapters.