Last updated: August 2026
This app does not require an account and does not collect any personal information directly. The following third-party services used in the app may collect limited data as described below.
We use Google AdMob to display ads that support free use of the app. AdMob may collect device identifiers (such as the IDFA, if you grant tracking permission) to show relevant ads. You will be asked for tracking permission on first launch, per Apple's App Tracking Transparency framework; you can decline without affecting app functionality. See Google's privacy policy.
If you purchase "Remove Ads," purchase and transaction data is processed by RevenueCat to verify and restore your purchase across devices. No payment card information is collected or stored by us. See RevenueCat's privacy policy.
We do not collect your name, email, location, or any other personal data. The app does not require sign-in.
We may update this policy occasionally; changes will be posted here.
Questions or feedback about this policy or the app: Contact form
This app is an independent study tool and is not affiliated with or endorsed by Japan's National Police Agency or any government body. Content is for educational purposes only.