# Privacy Policy — CORE
**Last updated:** 2026-06-07
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## What this app does not collect
CORE does not collect your name, email address, phone number, location, contacts, camera input, or any other personal information. No account or login is required to play.
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## Data stored on your device
Game progress (cavern reached, crystal bank balance, settings) is stored locally on your device using SQLite. This data never leaves your device and is deleted when you uninstall the app.
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## Analytics
CORE uses **Firebase Analytics** (Google LLC) to collect anonymous gameplay data, including which caverns are played, completion and failure events, and which in-app screens are visited. This data is used solely to understand how the game is played and to improve it. No data that identifies you personally is collected.
Firebase Analytics data is processed by Google under their privacy policy:
https://policies.google.com/privacy
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## Advertising
CORE uses **Google AdMob** (Google LLC) to show rewarded ads. Ads are only shown when you explicitly request them (by choosing to watch an ad to refill your crystal bank). AdMob may use your device's advertising identifier (resettable in your device settings under **Privacy → Ads**) to serve ads.
AdMob is governed by Google's privacy policy:
https://policies.google.com/privacy
You can opt out of personalised advertising at any time by resetting your advertising ID or enabling "Opt out of Ads Personalisation" in your device settings.
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## Notifications
If you grant notification permission, CORE sends local device notifications to remind you when your crystal bank has refilled or a daily challenge is available. These notifications are scheduled on-device and do not involve any external server.
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## Children
CORE is not directed at children under 13. We do not knowingly collect data from children.
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## Changes
If this policy changes materially, the updated version will be published at the same URL with a revised date.
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