Privacy and data storage

All your data — drives, expenses, vehicles, mileage rates, and settings — is stored on your device using SwiftData (iOS) or your browser's local storage (web).

You do not need a Google account or internet connection to record drives and expenses. The app is fully functional offline.

When you sign in with your Google account, MileLedger automatically syncs your data to Firebase (Firestore for structured data, Firebase Storage for receipt images).

This enables data to appear across multiple devices and provides a cloud backup.

If you sign out, the app stops syncing. Your data remains on the device.

When signed in, the following are synced to Firebase: drives, expenses, vehicles, mileage rates, saved locations, and app settings.

Receipt photos are synced to Firebase Storage.

Certain ephemeral or OS-level data (widget state, notification state) is intentionally not synced — it stays local-only.

MileLedger does not sell your personal data, share it with advertisers, or use it for targeted advertising.

MileLedger does not transmit your location continuously — GPS is used only during active drive tracking sessions and for the recorded start/end points of drives.