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