Frequently Asked Questions

An Android app for logging track days. Lap times, vehicle setups (suspension, alignment, aero, powertrain), tire wear and heat cycles, maintenance schedules, and performance analytics.

The core is free — session logging, vehicles, tires, maintenance. Pro is an optional one-time purchase for analytics, CSV export, and extended setup fields. No subscriptions, no ads.

Yes. Everything is stored locally. No internet needed to log sessions, view analytics, or manage data. Works fine with no cell service.

Android 8.0 (Oreo) or later. That covers most Android phones and tablets still in use.

Locally, on your device, in a SQLite database. Nothing goes to the cloud. Data only leaves your phone if you explicitly export or back it up.

Yes. CSV export for spreadsheets, JSON backup for everything. Backups can be restored on the same device or transferred to a new one.

Manual backup exports everything to a JSON file. Save it to phone storage, Google Drive, wherever. Worth doing before app updates or device switches.

No. Anonymous, privacy-respecting analytics (Firebase) for general usage patterns. No personally identifiable information is collected. See the Privacy Policy for details.

Tap "TRACK SESSION" on the home screen, pick a vehicle and track, fill in the basics. Expand the setup sections if you want to log suspension, pressures, alignment, etc.

50+ optional fields: suspension (spring rates, damper settings, ride height, sway bars), alignment (camber, toe, caster), aero (wing angles, splitter settings), powertrain (boost, fuel map, diff settings), and tire pressures/temperatures. Use what's relevant, skip what isn't.

Create tire sets with brand, compound, and size. Assign them to sessions and heat cycles and distance are tracked automatically. Over time you can see where each set stands.

Lap time trends across sessions, session-to-session comparisons, temperature sensitivity, tire pressure patterns. Pro unlocks the full set of charts and deeper analysis.

Advanced analytics, CSV export, extended setup fields, and future premium features as they ship. Full list on the Pro page.

No. One-time purchase. Includes future Pro features. No subscriptions, no recurring charges.

Open the app, go to Settings, and tap "Upgrade to Pro." The purchase is handled securely through Google Play. Your Pro status is linked to your Google account and will transfer if you switch devices.

Pro features are clearly marked in the app, so you can see what you'd get before buying. Google Play provides a refund window if you change your mind.

Try these steps: (1) Force-close the app and reopen it. (2) Restart your phone. (3) Make sure you're running the latest version from Google Play. (4) Clear the app cache in Android Settings > Apps > Lap Tracker > Storage > Clear Cache. If the issue persists, contact support with your device model and Android version.

First, check your unit settings (Settings > Units) to make sure they match your expectations (metric vs imperial). If data appears missing, check that you have the correct vehicle selected, as sessions are organized by vehicle. If you recently restored from a backup, ensure the restore completed successfully. For persistent issues, reach out to support.

Visit our support page to send us a message, or email us directly at daniel.dztech@gmail.com. When reporting a bug, please include your device model, Android version, and steps to reproduce the issue.