Vow runs on your iPhone. Your phases, your app selections, and your schedules are stored locally on your device using Apple's Screen Time framework. We don't operate any servers, we have no account system, and we never see your data.
None. Vow has no analytics, no crash reporting, no advertising identifiers, and no usage telemetry. There is no Vow user database, because we don't operate any servers.
FamilyControls framework keeps that selection opaque even to us.All of the above can be wiped at any time by deleting the app.
If you set up an NFC sticker to start or end a phase, Vow reads and writes only a phase identifier to that tag. This never leaves your device and is never sent to us or anyone else.
If you choose a phase that only ends after activity (steps, exercise minutes, or a workout), Vow reads the relevant values from Apple Health on your device only. This data never leaves your iPhone and is never sent to us. You can revoke access at any time in iOS Settings → Health.
The optional "pause ending" reminder is a local notification scheduled on your device. There is no push server involved.
Vow's optional one-time "Lifetime" unlock is processed by Apple through the App Store. We use RevenueCat to validate your purchase — RevenueCat receives a pseudonymous app user identifier and your purchase/receipt data, but never your name, email, or payment details. We never see your payment information.
Vow does not knowingly collect any data from anyone, including children under 13. Since Vow collects no data at all, this is automatic.
If we update this policy, the change date above will be revised. We will not retroactively change the policy to collect data that wasn't collected before.
For privacy questions, requests, or anything else: ahoi@sent.com.