Privacy policy
Updated: 19 October 2026
Blubb is developed by Luca Mattiazzi. This policy covers the iPhone app, the Apple Watch app and its complication.
No data collected
Blubb collects no personal data. It has no account, developer server, advertising, analytics or tracking, and makes no network requests.
Data on your devices
Your tank (fish, colors, decoration, food, water, level) and settings stay on the Apple Watch. The iPhone app keeps the last state it received and choices waiting to be sent. The two devices exchange them through Apple’s WatchConnectivity; they are never sent to the developer. The app does not access contacts, location, photos, the microphone or health data.
Deleting data
Deleting Blubb from your iPhone and Apple Watch removes the stored data, except for backups managed by the operating system. There is no developer recovery service.
Support and this website
If you email luca@grokked.it, the developer receives your address and what you write, and uses it only to reply. These pages use no analytics, advertising or tracking cookies; the server that hosts them processes technical request data such as IP addresses to serve the site.
Changes
This policy will be updated if the app’s data practices change.