Last updated: 18 July 2026. This page informs you of our policies regarding the collection, use, and disclosure of personal data when you use our Service and the choices you have associated with that data.
Information Collection and Use. To provide a personalized study experience and manage subscriptions, we collect several different types of information.
Personal Data: While using our Service, we may ask you to provide certain personally identifiable information ("Personal Data"), including: Email Address and Name (collected via Google Sign-In to create your account and sync your study progress across devices); and User Identifiers (unique IDs generated by Firebase and RevenueCat to manage your "Pro" status and trial period).
Usage Data: We collect information on how the Service is accessed and used, including your study progress (Leitner system box placements, quiz scores, and daily question counts) and device security status (we check whether your device is rooted or jailbroken to ensure the integrity of our practice environment; we do not store specific device hardware IDs).
Third-Party Service Providers. We employ third-party companies to facilitate our Service. These parties access your Personal Data only to perform tasks on our behalf: Google Play Services (app distribution and core functionality); Firebase by Google (Authentication for login, Firestore for saving study progress, and Storage for hosting educational content); RevenueCat (subscription management and "Pro" status verification - it receives a unique identifier and purchase history but never your card details); and Google Search via Chrome Custom tabs (for searching question explanations, governed by Google's Privacy Policy).
Data Retention and Deletion. We retain your Personal Data only as long as necessary for the purposes set out in this policy. Your study progress and account data are stored in Firebase. You may request deletion of your account and associated data at any time by contacting us.
Security of Data. We use industry-standard encryption provided by Google Firebase to protect your information. For the protection of our intellectual property and the fairness of our practice environment, the app will not function on rooted or jailbroken devices.
Children's Privacy. Our Service does not address anyone under the age of 13, and we do not knowingly collect personal data from children under 13. If you believe a child has provided us with Personal Data, please contact us.
Changes to This Privacy Policy. We may update this policy from time to time. We will notify you of changes by posting the new policy on this page and updating the "Last updated" date.
Contact Us. If you have any questions about this Privacy Policy, email us at antkatsupport@gmail.com