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Support
Updated 12 September 2026
Write to us
One inbox for everything about the app. We answer within two working days, Monday to Friday, Swiss time.
What to include
Phone model and system version, app version (Settings, at the bottom of the screen) and, if the problem concerns a reading, the day and time it happened. With those, most cases close on the first reply.
Your data
You can ask for a copy of your data or for its deletion at any time. Account deletion is done from the app and is explained on its own page.
Who answers
Zefyr SA, Via alla Chiesa 16, 6818 Melano, Switzerland.