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No. LifeLinkOS works fully on your device with no sign-up. An optional account only adds secure cloud backup and syncing across your own devices.
On your device by default. We don't sell your data, show ads, or use trackers. If you turn on cloud backup, your data is transmitted securely and stored only to provide the sync service.
Open Settings › Privacy & data. You can export a full backup, erase all data, or permanently delete your account at any time.
LifeLinkOS offers a 7-day free trial, then a subscription to keep the full app. Manage or cancel anytime in your Apple Account settings. See the Terms for details.
On the subscribe screen, tap Restore Purchase. Make sure you're signed in with the same Apple Account you subscribed with.