Mental Math Champion

Support

Need help with Mental Math Champion? Email us and we’ll get back to you.

For app support, billing questions, restore purchases, or feedback:

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$Mental Math Champion home screen$

$Fog Run — math roguelite$

Help

Common questions

Do I need an account?: No. Core play does not require a Stealth Launch account. Progress, streaks, statistics, and achievements are stored on your device.
How do I restore Premium?: Open the app Settings and use Restore purchases. Premium is managed through your Apple ID or Google Play account. You can also manage or cancel the subscription in your store account settings.
Why am I seeing ads?: The free tier shows Google AdMob ads (including optional rewarded ads for an extra Fog Run). Premium removes ads and unlocks additional Training content and unlimited Fog Runs.
How do leaderboards work?: Optional online leaderboards use Apple Game Center (iOS) or Google Play Games (Android). Sign in through your device’s game services when prompted.
I lost my progress: Progress is stored locally. Clearing app data, uninstalling, or switching devices without a backup can remove it. Contact us if something looks wrong and include your device and OS version.
Privacy: Read the full Mental Math Champion Privacy Policy for details on on-device data, ads, leaderboards, and purchases.

The app