PRIVACY
Privacy policy
Updated September 30, 2026
Children can practice without an account. Progress and settings stay on the device. Parent sign-in is optional.
Practice data
Answers, progress, and settings are stored on the device. We do not send practice records to our own servers. You can delete local records in Settings.
Parent account
Parents may optionally sign in with email or Google. When enabled, Firebase Authentication processes email addresses, authentication data, IP addresses, and device information. Children do not need to sign in to practice.
Ads and purchases
The free version may show an ad between rounds. Google AdMob may process IP addresses, ad interactions, diagnostic information, and device identifiers to display ads, prevent fraud, and diagnose problems. Ad requests are configured for child-directed treatment, and the app does not request advertising ID permission. The lifetime ad-free purchase is handled by Google Play Billing; we do not receive payment card numbers.
Website
This website is served by Cloudflare Pages. We do not use our own analytics or advertising cookies on the website. Cloudflare may process IP addresses and connection information to deliver and secure the site.
Contact
For questions or data deletion requests, contact info@innocation.moo.jp.