Last updated 26 July 2026
Tanko shows Swiss fuel prices. It has no accounts, no logins and no advertising, and it does not sell or share data for marketing. This page describes exactly what leaves your device and who receives it.
Tanko needs a point to measure distances from. That is either your device location, if you grant permission, or the centre of the map if you do not. Tanko never asks for location on a first visit — it only reads a permission you have already granted.
Your coordinates are used to rank stations and are not stored on any server we run. They are sent, as coordinates alone, to the services in the table below.
Three items in your browser's local storage. None of it is transmitted, and clearing your browser data removes it.
| Key | Contents |
|---|---|
fuel-calc-settings | Fuel type, discount cards and their rates, brand preferences, price-confidence choice |
fuel-calc-radius | Your search radius |
fuel-calc-theme | Light or dark |
Requests marked via our server are made by Tanko's backend, so the third party sees our server's address and not yours. Requests marked from your browser reach the third party directly, which means they can see your IP address.
| Service | Receives | How |
|---|---|---|
| TCS (Touring Club Schweiz) source of all price data |
No data about you. We fetch the national price list and station update times. | via our server |
| FOSSGIS e.V. (Valhalla, OSRM) driving distances and times |
Your coordinates and the coordinates of nearby stations | via our server |
| OpenStreetMap Foundation (Nominatim) turns coordinates into a street name |
Your coordinates, rounded to about 100 metres | via our server |
| OpenStreetMap Foundation and CARTO map tiles |
Your IP address and which part of the map you are looking at | from your browser |
| unpkg (Cloudflare) and Google Fonts map library and typefaces |
Your IP address | from your browser |
| Umami usage statistics |
Page views and which buttons are used, plus your IP address (see below) | via our server |
| Google Maps, Apple Maps or Waze | The station you chose — only when you tap a navigation button | from your browser |
| Cloudflare hosting |
Standard server logs, including your IP address | hosting provider |
Tanko records anonymous usage events — which fuel was selected, that a search was run, that a station was tapped — using Umami. No cookies are set and no profile is built across sites.
Two things about it deserve to be said directly rather than buried:
tanko.ch/a rather than
Umami's own domain. That has the effect of bypassing ad and tracker blockers.If you would rather not be counted, blocking requests to
tanko.ch/a stops it, and nothing else in Tanko depends on it.
Under the Swiss Federal Act on Data Protection (revFADP) and, where it applies, the GDPR, you may request access to personal data held about you, ask for correction or deletion, and object to processing. In practice Tanko holds no account and no profile, so the data that exists about you is limited to server logs and the usage statistics above.
Questions about this page or a request concerning your data: privacy@tanko.ch.
If what Tanko sends or to whom changes, this page changes with it, and the date at the top moves.