Frenzel Master · iOS app · Developer: ilbeol
Frenzel Master ("the app") is a dry-land training app for freediving equalization and breath holding. This policy explains what the app collects, what it does not collect, and how you can delete what it collected.
This policy covers the iOS app. The Android app has its own policy — privacy-policy.html. The two apps genuinely differ in sign-in methods, account deletion path and usage analytics, so the documents are kept separate.
| If you do not sign in | Nothing is collected. Every feature still works; your records stay on the device |
| If you sign in | Your email address and display name are held by Firebase Authentication; our own server stores only your account identifier and game progress |
| Heart rate | Never leaves your device. It is not even stored |
| Ads · tracking · analytics | None. No advertising identifier is read, no analytics SDK is included |
| To delete | In the app: Profile → Account → Delete Account |
Every feature of the app works without an account. In this mode the app collects and transmits no personal information at all. Your dive records, training records and settings are stored only on your device and are removed when you delete the app.
If you want your records to follow you to another device, you can Sign in with Apple or Sign in with Google. The following is then collected.
Account information
| Item | Where it comes from | What it is used for |
|---|---|---|
| Email address | Apple or Google | Identifying your account, answering support requests. Held by Firebase Authentication |
| Display name | Apple or Google | Showing your name in the app. Held by Firebase Authentication |
| Account identifier (uid) | Firebase Authentication | The key that finds your data on the server |
| Profile picture | Shown in the app. The picture's address is passed to our server when you sign in, but it is not stored |
Sign in with Apple lets you hide your email address. If you do, we only receive the anonymous relay address Apple generates (
@privaterelay.appleid.com); your real address is never passed to us. Our server keys your data by account identifier (uid), not by email, so hiding your address does not affect restoring your records.
Game progress
Level and experience points, dive points, dive logbook, training-table records, badges earned, suits owned and equipped, dive sites unlocked, statistics (total dives, best depth, longest hold, equalization counts, training streak and the like).
Your app settings (language, sound, reminders and so on) stay on the device and are never uploaded. The only thing our server keeps is the game progress above, filed under your account identifier.
This data is used only to restore your records when you change devices or reinstall the app. It is not used for any other purpose and is not sold or shared with third parties.
The app can connect to a Bluetooth heart rate strap to show your heart rate during training.
The app performs no tracking whatsoever. Nothing is linked with your activity in other companies' apps or websites.
| Third party | What | Why |
|---|---|---|
| Google (Firebase Authentication) | Account authentication | Handling sign-in |
| Google (Google Sign-In) | Account authentication | When you choose Google |
| Apple (Sign in with Apple) | Account authentication | When you choose Apple |
| ilbeol.com server | Account identifier and game progress | Restoring records across devices |
All communication is encrypted with HTTPS.
Collected data is retained for as long as your account exists.
You can delete your account from inside the app:
Profile tab → Account → Delete Account
This erases your game data on the server, your authentication account, and the records on your device — all of it. This cannot be undone.
If you delete only the app and keep the account, the server data remains and is restored when you reinstall and sign in with the same account. To remove the account as well, use Delete Account above or write to ilbeol.com@gmail.com.
The app is not directed at children and does not knowingly collect personal information from children. If we learn that we have collected such information, we delete it without delay.
You may request access to, correction of, deletion of, or restriction of processing of your personal information. Deletion is immediate through Delete Account in the app; for anything else, please write to the address below.
If this policy changes we will update this page and change the "last updated" date. Significant changes will also be announced inside the app.