Fönster stores the sleep, feeding and nappy events you log, your baby's date of birth, and the optional names you enter (baby and caregivers). That is all. There are no accounts, no email addresses, no phone numbers, and no advertising identifiers.
Your data is stored on your device first, and is also synchronised to our server (hosted on Supabase, USA) so that a second caregiver can join with a link and both phones show the same log. Records are keyed by random identifiers, not by your identity — we could not tell who a household belongs to even if asked.
We do not sell data, show ads, or use third-party tracking or analytics SDKs. We never take old data hostage: export (CSV) works even without a subscription.
Deleting the app removes local data. To remove synced household data from our server, email us with your invite code or household details: next.epic.dev@gmail.com.
Subscriptions are processed by Apple. We never see your payment details.
Fönster gives general guidance based on age and your own logs. It is not medical advice — talk to your child health service (BVC, sundhedsplejerske, neuvola, health visitor) or a doctor if you are worried.