Crystal Cavern

Privacy Policy (iOS app)

Last updated: 2 October 2026

How the iOS app “Crystal Cavern” handles information.

The developer receives nothing

There is no account and no sign-in. Nothing in the app asks for your name, address, phone number or email. The developer never receives your personal information.

The one exception is if you write to the support address below. In that case the email itself — your address and what you wrote — is received, used only to reply and to investigate the problem, and passed to no one.

Game progress

Your crystals, buildings, language and text size are stored on your device only. Nothing is sent to a server, and the developer cannot see it.

To erase it, use Menu → Start over inside the game, or delete the app; deleting the app deletes the saved data with it.

Advertising

This app shows rewarded video adverts through Google AdMob.

Adverts are optional. One plays only when you choose a bonus yourself. The game can be finished without watching a single one.

To serve adverts, measure them and prevent fraud, AdMob may collect your device's advertising identifier (IDFA) and coarse usage data. This is done by Google; the developer never receives it at an individual level.

See How Google uses information from sites or apps that use our services.

Tracking permission

Shortly after first launch, iOS asks whether you allow tracking. The request itself explains what it is used for.

Declining changes nothing about the game. It only makes the adverts less relevant. You can change your mind later under Settings → Privacy & Security → Tracking.

In the EEA, the UK and Switzerland, a separate screen asks for your consent to advertising. You can change your answer later with Privacy settings, in the “Terms and privacy” card of the game's Menu. The button appears only for players in those regions.

Notifications

What accumulates while you are away reaches its limit after eight hours. The app tells you once, at that point. The notification is silent.

Permission is requested once only, and never again if you decline. You can turn it off at any time under Settings → Notifications.

Children

The app is suitable for all ages. Because it has no way of collecting personal information, nothing is collected when a child plays it.

Changes to this policy

This policy may change. Any significant change will be posted on this page.

Contact

Questions about this policy: r451mjkl@icloud.com