Last updated: May 2026 · Version 1.0
Vow does not collect, store, or transmit your personal data. There is no account, no email at sign-in, no name, no phone. Your askesis, challenges, diary entries, and check-in history live on your device, in the app's local sandbox. We do not have copies of any of it on our servers.
We do not run analytics SDKs inside the app. No Mixpanel, Amplitude, Firebase Analytics, AppsFlyer, Adjust, or similar tools. We do not measure your in-app behaviour.
The only exception is StoreKit (Apple's payment system) when you take a paid askesis. Apple processes the payment — we receive only the confirmation of purchase, never your card data or Apple ID details. This is required by iOS and cannot be turned off.
To participate in the TestFlight beta, you fill out a short form on Tally. In that form we ask for your email. This is the only personal data we collect, and we use it for exactly two purposes:
1. To send you the TestFlight invitation — Apple physically requires an email to deliver a TestFlight link.
2. To send you one short feedback form approximately 7 days after you accept the invitation.
That's it. We do not add you to a newsletter. We do not share your email with third parties. We do not use your email for advertising. We do not match it against any other database.
Tally is a Belgian company, GDPR-compliant, with servers in Germany. Form responses sit on Tally's infrastructure. We export responses periodically and keep a local copy in our encrypted project storage.
We keep your email until one of two things happens, whichever comes first:
1. You ask us to delete it.
2. Twelve months pass after you submit the form, with no further communication from us. After that, we delete your record automatically.
Write to hello@vowapp.app with the subject "Delete my data" and the email address you used in the form. We delete the record within 7 days and write back to confirm.
This website does not set any cookies. It does not embed Google Analytics, Meta Pixel, or any third-party tracker. The only external resources loaded are Google Fonts (Cormorant Garamond, Inter) and the Tally form embed when you click "Apply to the beta".
Vow is for users 13 and older. Users under 13 are gently declined at app entry. Beta testers must be 18 or older — the form has an age check.
If we change anything material in how we handle data, we update this page and bump the version number. The current version is shown at the top.
Write to hello@vowapp.app. We read every email.