Tankbook Política de privacidad

Introducción

Tankbook ("the app") is developed by Grisu Studio LLC. This policy is short because the app is simple: there are no accounts, no login and no servers of ours. Every vehicle and every fill-up you record is written to your own device and stays there. The only data that leaves your phone is what Google's advertising SDK sends in order to serve the ads that keep the app free, and you control whether that is personalised.

Alcance

Esta política de privacidad se aplica únicamente a la aplicación móvil Tankbook.

Datos que recopilamos

Stored on your device only, never transmitted to us: your vehicles, and every fill-up and service record you enter, including the odometer reading, volume, price, currency, fuel grade, station name and any note you add; and your settings, such as units, language, appearance, sound and haptics. We also store the answer to the one-time age question as a bracket only — either "under 13" or "13 or over". The birth year you enter is converted to that bracket and immediately discarded; the app never stores a date of birth. Collected by Google AdMob, not by us, in order to serve ads: your device advertising identifier (IDFA on iOS, Advertising ID on Android), IP address, coarse device information such as model and operating system version, and ad interaction data. We never collect your name, email address, phone number, contacts, photos, number plate or precise location — the app asks for none of them. Tankbook requests no location permission at all: a station is a name you type, not a place we track.

Cómo usamos tus datos

Your records are used only to work out your consumption and your costs, on your device. They are never uploaded, never shared and never analysed by us: there is no analytics SDK and no crash-reporting service in Tankbook, so we genuinely cannot see what you drive or where you fuel it. Advertising data is used by Google to deliver and measure ads. In the European Economic Area and the United Kingdom the app shows Google's consent form before any ad loads, and on iOS it shows Apple's App Tracking Transparency prompt. If you decline either one, ads still appear but are non-personalised. You can revisit and change these choices at any time from Settings. The app also caps the content rating of every ad it requests, so ads for gambling, alcohol, dating and similar adult categories are excluded regardless of your consent choices.

Privacidad de los menores

Tankbook is rated and listed for people aged 13 and over and is not directed to children. The app additionally asks a neutral, skippable age question on first launch. If you indicate you are under 13, the app switches to child-directed treatment for the rest of its life on that device: ads are restricted to the "General audiences" rating, are never personalised, no advertising identifier is used, and Apple's tracking prompt is never shown. This setting can be changed at any time in Settings. We do not knowingly collect personal information from children, and the app has no mechanism to do so — there is no account, no messaging and no upload of any kind.

Seguridad de los datos

Because we run no servers and hold no database, there is no copy of your records anywhere for us to lose or for anyone to breach. Everything Tankbook stores lives in the app's private storage on your device, protected by the operating system's own sandboxing and by whatever device encryption you have enabled. Uninstalling the app permanently deletes all of it, and Settings also offers a reset that clears your saved data without uninstalling. Data handled by Google AdMob is governed by Google's own privacy policy at policies.google.com/privacy.

Cambios en esta política

We will update this policy whenever the app's behaviour changes in a way that affects it, and the "Last Updated" date above will change with it. Material changes will also be noted in the app's release notes. If a future version ever adds a server, a backup or an account, this policy will be rewritten and republished before that version is released — not after.

Contacto

Questions, corrections or a request to delete data: email support@grisu.co with "Tankbook privacy" in the subject. Because all of your data is held on your own device, a deletion request is fulfilled by uninstalling the app or using the reset option in Settings — we hold nothing to delete on our side, and we will say so plainly if you ask.

Eliminación de cuenta y datos

Cómo eliminar todo lo que guarda Tankbook, y qué guarda realmente.

Política de privacidad de la empresa

Para consultar la política general de la empresa, visita Grisu Studio.