Every time you fill up without looking, you pay more than you should.

€9.95 a year, per car. No commitment — cancel whenever you want. One thing to know: cancelling is immediate — you lose access to that car right away, even if you'd already paid for the year.

Yes. The first few times you open the app you can use it without activating your car. From the fourth time on, you'll need to activate it to keep seeing prices.

No. Receipt photos are saved only on your own device, never on our servers. If you switch phones or clear your browser data, they're gone — export them first if you need to keep them.

Yes. You can turn on trip logging for that car and record each work trip with its mileage, plus parking and toll receipts. Export it as a CSV whenever your accountant needs it.

Yes — alongside petrol stations, OptiTank also shows you the nearest chargers and filters by connector type.

No, it works right in your browser. But we recommend installing it: your receipt photos and local data are stored in the browser, and if the app isn't installed the browser may delete them on its own (for example, Safari on iPhone removes them if you go a few days without opening the site). Installed on your home screen or desktop, that data is much better protected.

Clearing just the cache normally doesn't affect your photos. But if you clear site data, cookies or “all browsing data”, your receipt photos are lost and can't be recovered. Your account, cars and trips are stored on our server: sign in again and they're still there.

On iPhone: open app.optitank.app in Safari, tap Share and choose “Add to Home Screen”. On Android: in Chrome, open the menu and tap “Install app”. On desktop (Chrome or Edge): click the install icon in the address bar.