Zaelio is an offline Android app for creating custom trackers, recording sessions, and storing measurements locally in SQLite. Features: * Create custom trackers with number, text, and timer fields * Record and continue sessions * Sort trackers and sessions locally * Import and export trackers, sessions, or full JSON backups * Light/dark theme, accent color, font size, and field size settings * No Google Play Services, Firebase, ads, tracking, cloud sync, or account required