In one line: Beckenlog collects nothing. No account, no app server, no analytics. This website sets no cookies and loads no third-party code.
Updated: 10 November 2026 · Operator: see the Impressum.
Beckenlog works without any infrastructure of ours. There is no backend where readings, profiles or usage statistics could arrive. The protection here is not a policy clause; it is the architecture — there is no endpoint to send anything to.
| Area | Processing |
|---|---|
| Readings, tanks, care events | Only in the app's local database on your device (iOS SwiftData). Never uploaded. |
| Camera (colour matching of the test chart) | The image is analysed in memory and discarded. It is never saved as a file and never transmitted. |
| CSV export | Only on your explicit action: you choose the destination in the iOS share sheet (mail, Files, a share extension). That transfer is yours to control. |
| iCloud | The app does not use any iCloud account of ours. If you have iOS device backups enabled, your device backup includes the app's data; that feature belongs to Apple, not to us. |
In the App Store privacy labels this corresponds to “Data Not Collected”.
This page is served from a private home server. It contains no cookies, no third-party JavaScript, no embedded fonts, maps or video. Access logs (IP addresses) are not stored on our server. Delivery is encrypted (HTTPS) through a relay (Cloudflare Tunnel) that necessarily passes the connection through without giving us any storage or profiling of it.
If you write to us, we keep what you send in order to answer and for a reasonable period afterwards, normally 24 months. The legal basis is Art. 6(1)(f) GDPR (legitimate interest in replying). We do not pass it on.
You have the rights of access, rectification, erasure, restriction, objection, data portability and complaint to a supervisory authority under Chapter III GDPR. Because we hold no personal data about you — beyond any correspondence — you can delete the app's data yourself: delete an entry, delete a tank, or uninstall the app. For anything else, a message to the address in the Impressum is enough.