We respond to every message.

Get in touch

Email is the fastest path to a resolution. Include your device and OS version (Android, or iOS/iPadOS) and the app version number (visible in the app's About screen).

Data and privacy

Kuroki Studio apps collect no personal data. All app data is stored locally on your device. No analytics, no telemetry, no crash reporting to any external service.

A formal privacy policy is available on each app's page here and on its store listing (Google Play, and the App Store where available).

Refunds

Your store handles refund requests directly. On Google Play, within about 48 hours of purchase, use the Play Store app or Google's refund request page . On the App Store, request one through Apple's refund process . Outside those windows, contact support and we'll evaluate case by case.

Common questions

Do apps work without internet?

For almost everything, yes. The utility apps run fully offline; their only network use is verifying a purchase. The one exception is online multiplayer in the game Barrage, which needs a connection. Barrage against the AI, and every other app, works offline.

Will my data transfer between devices?

Data is stored locally. To move it, use your device's backup (Google One backup on Android, or iCloud on iPhone and iPad) or any manual method the app supports.

Is there a subscription option?

The utility apps are one-time purchase only, with no subscription. We add a subscription only where it pays for genuine ongoing value (a live service with real running costs), never just to generate recurring revenue. The one example today is the game Barrage: it has an optional subscription for seasonal extras, but it never gates a core feature, and online play is included in the one-time unlock.