Last updated: July 9, 2026
This Privacy Policy explains how personal information is handled in the app "JLPT Japanese Vocabulary 10000" provided by JUUVO.
The app does not require user accounts and does not directly collect personal information. However, the following third-party services may automatically collect certain information.
We use Google AdMob to display ads to users on the free plan. AdMob may collect advertising identifiers (IDFA) and similar data. See the Google Privacy Policy for details.
We use RevenueCat to process and manage subscription purchases. Purchase-related information is processed by this service. See the RevenueCat Privacy Policy for details.
We use PostHog to understand how the app is used (for example, which screens are opened and which features are used) so we can improve it. Analytics events are associated with a random identifier, not with your name or contact details. On iOS, tracking-related collection is performed only if you allow it in the App Tracking Transparency prompt; if you decline, tracking is disabled. See the PostHog Privacy Policy for details.
We use Sentry to receive crash reports and fix bugs. When a crash occurs, technical information such as the device model, OS version, and stack trace may be sent. See the Sentry Privacy Policy for details.
Your learning history (such as which words you have checked off) is stored only on your device and is never sent to external servers.