Last updated: September 15, 2026
TallUp stores all of your data (profile, measurements, metrics, settings) locally on your device, in a local database. TallUp has no backend and never sends your data anywhere.
The only copy that can leave your phone is the one made by your own device backup — iCloud on iOS, Google One on Android — which is enabled and controlled by you, in your own account, and never accessible to us. You can exclude TallUp from it in your device settings.
TallUp requires no account and collects no personal data. The app contains no analytics, tracking or advertising SDK. The only third party that receives anything from the app is RevenueCat, the service that processes in-app purchases (see Purchases below).
One nuance, stated plainly. TallUp is built with standard Google and Apple platform components — local reminders, in-app purchases, the store rating prompt. Some of them bundle Google Play services that are able to read a technical device identifier. TallUp never asks for one, never reads one and never receives one: reminders are scheduled entirely on your device and there is no push server anywhere. Google nevertheless requires this to be declared whenever such a component ships inside an app, which is why the Play Store listing shows "Device or other IDs" under collected data. Nothing is shared with third parties, and none of your measurements, profile, metrics or journal entries ever leave your device.
Adult-height estimates are statistical calculations performed entirely on your device, based on the information you enter. They are not a medical diagnosis and do not replace advice from a health professional.
Premium subscriptions are processed by Google Play Billing on Android and by the Apple App Store on iOS, through RevenueCat, a purchase-management service. RevenueCat receives an anonymous, random identifier generated on your device and the store's purchase receipts, so that your subscription can be validated and restored on a new device. It receives no name, e-mail, measurement or any other data, and we use it for no other purpose (RevenueCat privacy policy). TallUp itself receives no payment or identity information; the store's own privacy policy applies to the transaction.
You can permanently erase all data at any time from Settings → Erase all data, or by uninstalling the app.
TallUp is intended for users aged 13 and over, and for parents tracking their children's growth. Since no data is ever transmitted to us, no personal data of any user — minor or adult — is collected or processed by us.
Questions about this policy: tallup.support@omnaiapps.com