Last updated: November 12, 2026
crelve ("we", "us", or "our") operates the iOS application "JH English Quiz" (the "App"; shown as "中学英語 Be Study" on iOS). This Privacy Policy explains how we collect, use, and protect your information when you use our App.
1.1 Information stored on your device. Your learning progress and quiz results (which questions you answered correctly), your study streak, your settings, and a random device user ID (with the app version, platform, language setting, first and last active dates, and number of launches) are stored locally on your device. We do not send your learning progress or this device user record to our servers. The device user ID is also set as the user ID in Firebase Analytics.
1.2 Account. The App has no sign-up or login, and we do not ask for your name or email address. The App uses Firebase Authentication anonymous sign-in, which creates a random anonymous user ID that is not linked to your name or email address. This ID is used to link your purchase history across devices through RevenueCat.
1.3 Information you send to us. If you contact us from the App's Contact screen, we receive the name, email address, inquiry category, and message you enter, together with the language setting, app name, bundle ID, app version, and operating system (iOS) of your device. If you email us, we receive the information you provide. We use this information only to reply to you.
1.4 Automatically collected information.
The App does not use AI features, does not use the microphone or speech recognition, and does not access your location, contacts, or photos.
We use the collected information for the following purposes:
We use the following third-party services. These services collect and use information according to their respective privacy policies.
| Service | Provider | Purpose | Privacy Policy |
|---|---|---|---|
| Firebase Analytics | Google LLC | Usage analytics | Link |
| Firebase Crashlytics | Google LLC | Crash reporting | Link |
| Firebase Performance Monitoring | Google LLC | App performance measurement | Link |
| Firebase Authentication (anonymous sign-in) | Google LLC | Issuing a random anonymous user ID | Link |
| Firebase Cloud Messaging | Google LLC | Push notification delivery | Link |
| Firebase Remote Config | Google LLC | Remote configuration (such as the ad on/off switch) | Link |
| Firebase In-App Messaging | Google LLC | In-app messages | Link |
| Firebase Installations | Google LLC | Installation identification | Link |
| Cloud Functions for Firebase | Google LLC | Receiving inquiries sent from the App | Link |
| Google AdMob | Google LLC | Advertising | Link |
| AppLovin (AdMob mediation) | AppLovin Corporation | Ad delivery through mediation | Link |
| Unity Ads (AdMob mediation) | Unity Technologies | Ad delivery through mediation | Link |
| RevenueCat | RevenueCat, Inc. | Subscription and purchase management | Link |
3.1 About Advertising. The free version of the App displays ads through Google AdMob, with AppLovin and Unity Ads as mediation partners. These services may use advertising identifiers and similar technologies to deliver and measure ads. The App is not directed to children, and we configure ads so that only content suitable for all audiences is shown. In the free version, you can also watch a rewarded ad to get a hint on a question.
To opt out of personalized ads, you can decline tracking in the App Tracking Transparency prompt, or change it later in iOS Settings > Privacy & Security > Tracking, and you can also limit ad personalization in your device settings. Ads are removed when you purchase Premium.
3.2 Purchases. Payments are processed by Apple. We do not receive your payment card information. RevenueCat receives your anonymous user ID and purchase status to manage your entitlement.
We do not share your personal information with third parties except in the following cases:
Learning data is stored locally on your device. We retain analytics data and inquiry content for as long as necessary to provide and improve our services. The App has no account to delete; you can delete the locally stored learning progress by deleting the App. To request deletion of the data we hold, please contact us, and we will delete it within a reasonable period.
We implement industry-standard security measures to protect collected information. However, no method of transmission over the Internet or electronic storage is 100% secure.
You have the following rights:
To exercise these rights, please contact us using the information below. Because we do not hold your name or email address (except when you send us an inquiry), we may ask you for your device user ID or anonymous user ID to locate your data.
This App is designed for educational purposes and may be used by children. We do not knowingly collect personal information from children under 13. If we learn that we have collected personal information from a child under 13 without parental consent, we will delete it promptly. Parents or guardians who have concerns can contact us using the information below.
We may update this Privacy Policy as needed. We will notify you of significant changes through the App or other means. The updated Privacy Policy will take effect when posted on this page.
On devices running iOS 14.5 or later, we will ask for permission before tracking your activity. You can still use the basic features of the App even if you do not allow tracking.
The App can send local study reminders (for example, a daily reminder in the evening and reminders when you have not studied for a while) and push notifications. These are sent only if you allow notifications, and you can turn them off at any time in iOS Settings.
crelve
Email: w4cd2017@gmail.com