Privacy Policy for Think in Numbers

Last updated: November 2, 2026

1. Your practice stays on your device

Think in Numbers does not require an account and does not send your practice history to the developer. Classic scores, streaks, saved games, preferences and statistics are stored locally. Optional Numbers Plus also stores workout history, skill accuracy, daily goals, completed daily workouts, missed questions and training theme preferences locally.

2. No advertising or analytics

The app contains no advertising SDK, third-party analytics, tracking, AI service or developer-operated backend. We do not collect your name, email, location, contacts, photos or identifiers through the app.

3. Optional subscriptions on Apple and Google Play

Every original Classic feature remains free. Numbers Plus is an optional auto-renewing monthly or yearly subscription. Both plans provide the same additional training tools. On iOS, Apple processes payment, purchase verification, renewals, refunds and restoration through StoreKit. On Android, Google Play handles these services. The app checks the store’s verified subscription status to determine access to Plus. On Android, signed purchase receipts may be stored in private device storage for up to 24 hours of offline entitlement recovery; they are not sent to the developer. We do not receive your payment card details. Each store’s handling of purchases is governed by its own privacy policy and terms.

Classic and generated practice questions work offline. An internet connection is needed to load store prices, buy or restore purchases, and receive updated subscription status. Manage or cancel a subscription in your Apple Account settings or Google Play subscriptions, depending on where you subscribed. Apple and Google Play purchases are separate and do not transfer between stores. Removing the app does not cancel a subscription.

4. Sharing and export

When you choose Share Results or export your Plus workout history as CSV, iOS or Android presents its share chooser. You choose the recipient or destination. The CSV contains workout dates, modes, answer counts, accuracy and duration. The developer does not receive this export.

5. Data retention and your choices

Local progress is retained on this device, including when a Plus subscription expires. An active subscription is needed to access Plus tools again. Classic best scores and streaks can be reset in Game Settings. Removing the app removes its local data; iOS device backups may retain a copy according to your Apple settings. Android app backup and device transfer are disabled for local app data. Purchase history is managed separately by the store where you subscribed.

6. Younger users

The app does not ask children or adults to provide personal information. A parent or guardian should manage purchases using Apple’s or Google Play’s available purchase controls.

7. Support

If you choose to email support, we receive the information you include and use it to respond. Please do not send payment credentials. Contact: oanaunciuleanu@gmail.com.

8. Changes and terms

Policy updates will be posted on this page. Apple's standard Terms of Use apply on iOS. Android Terms of Use apply on Android.