Privacy
The short version
There is no account system and no cloud storage. Your mileage and fuel entries are calculated in your browser and saved only in your browser's local storage on this device. We never receive them. Reset in the app wipes them instantly.
What stays on your device
- All calculator entries (miles, gallons, settings) — browser local storage only;
- Exported CSV / printed PDFs — files you generate and control;
- Your Pro activation flag — a single on/off marker in the same local storage.
What we can see
- Anonymous, aggregate analytics (page views, country-level) via privacy-friendly, cookie-free web analytics. It does not identify you and cannot be used to reconstruct your entries.
- Standard server logs kept by our static hosting provider for security and abuse prevention.
Payments
Pro purchases are processed by our payment provider (Creem). At checkout the provider collects the details it needs to process your payment (e.g. email, card details) under its own privacy policy — we never see or store your card number. We receive only a record that a purchase occurred.
No trackers, no ad networks
We don't run advertising cookies, social pixels, or cross-site trackers. The site works with third-party cookies fully blocked.
Children & contact
This is a business tool; it's not directed at children under 13. Questions about this policy: harrow.zhao@gmail.com.