Last updated: August 2026
Vogel ("the app", "we") is provided by BUSATER YAZILIM ANONIM SIRKETI. This policy explains what data is collected when you use the app, where it is stored and how it is used.
You can start using the app without an account. To save your progress and carry it between devices, you need to create one. When you create an account we collect:
If you use Sign in with Apple and choose to hide your email, we only see the relay address Apple generates; we cannot access your real email address. Authentication is handled by Google Firebase Authentication.
The following data about your learning is kept:
If you have an account, this data is stored on Google Firebase (Firestore) and linked to your account so you do not lose progress when you change devices. Without an account, it stays only on your device.
To understand which countries and devices the app is used on, we record:
This information is used only to produce aggregate statistics and is not sold to third parties. We do not request location permission, we do not infer location from your IP address, and we do not use your advertising identifier for this purpose.
The microphone is accessed only during speaking exercises, when you start a recording. Your recording is used for pronunciation assessment and is not stored on our servers.
Subscriptions are processed through the Apple App Store and Google Play. We never have access to your card or payment details; these are handled solely by Apple and Google.
We use RevenueCat to track your subscription status. Your account identifier, email address and purchase status are shared with RevenueCat.
Free users are shown ads through Google AdMob. Premium subscribers see no ads.
On iOS you are asked for permission for personalised advertising (App Tracking Transparency). If you decline, ads are still shown but are not targeted to you, and the app continues to work with all its features. Your in-app learning data is not used for ad targeting.
Technical error reports are collected via Sentry to improve app stability. These reports contain the error message, device model and app version; they do not contain your learning content or password.
You can permanently delete your account and all cloud data from inside the app: Settings → Account → Delete Account. Deletion cannot be undone.
If you have a subscription, deleting your account does not cancel it; you must cancel it separately through the App Store or Google Play. See also our account deletion page.
Some of your data is processed through these services:
Each service is subject to its own privacy policy.
Our app is designed for users aged 4 and above. We do not knowingly collect personal data from children under 13.
This policy may be updated from time to time. Significant changes will be announced in the app.
For questions about our privacy policy: bsdigitalapp@gmail.com