Privacy Policy — Math Speed Booster

Last updated: June 29, 2026

Overview

Math Speed Booster (“the app”, “we”, “us”) helps you practice mental math through drills, speed tests, levels, and progress tracking. We built the app to be privacy-friendly: it works without an account, and your practice data stays on your device. This policy explains what information the app uses, the limited data shared with Apple and our subscription provider, and the choices you have.

No account required

You can use Math Speed Booster without signing up, logging in, or giving us your name, email, or phone number. We do not ask you to create an account, and we do not maintain user profiles on our servers.

Information stored on your device

The following is saved locally on your device only (using standard iOS storage) and is not transmitted to us:

• Practice and progress data: scores, accuracy, XP, levels, streaks, daily challenge results, achievements, and per-topic statistics.
• Your mistake history used for the “mistake bank” review feature.
• Session history (your most recent practice sessions).
• Preferences: sound, haptics, auto-submit, appearance, default difficulty, display name, and onboarding state.
• Daily usage counters used to apply free-tier limits.
• Local diagnostic breadcrumbs (the current screen name and timestamps) written to the app’s private storage to help with troubleshooting.

Deleting the app removes this local data from your device.

Subscriptions and purchase data

Math Speed Booster Pro is offered as auto-renewing subscriptions (weekly or yearly) and as a one-time lifetime purchase.

• Apple processes all payments. When you buy or restore a purchase, Apple handles the transaction and may collect purchase-related information in accordance with Apple’s Privacy Policy. We never see or store your payment card details.
• We use RevenueCat, Inc. as our subscription management provider to determine whether your “Pro” access is active and to enable “Restore Purchases.” To do this, the RevenueCat SDK processes a randomly generated app user ID, your device’s vendor identifier (IDFV), and purchase details such as which product you bought and its purchase, renewal, and expiration dates and store country. This information is used only to manage entitlements and is not used to advertise to you. See RevenueCat’s privacy policy at https://www.revenuecat.com/privacy.

How we use information

We use the data above only to:

• Run the app’s features (practice, stats, streaks, mistake review).
• Unlock and restore your Pro entitlement and apply free-tier limits.
• Diagnose problems and improve reliability.

We do not use your data for third-party advertising, and we do not sell your personal information.

Sharing

We share data only as needed to provide the app:

• Apple — for App Store delivery, payments, and subscription management.
• RevenueCat — for subscription entitlement and restore functionality, as described above.

We do not share your practice data with anyone; it remains on your device.

Data retention and deletion

Practice data and preferences live on your device and are removed when you delete the app. Purchase and subscription records are retained by Apple and RevenueCat according to their policies, since they are needed to honor and restore purchases. To request deletion of subscription-related data associated with your device identifier, contact us at TQTechOfficial@gmail.com.

Children’s privacy

The app does not require personal information and is suitable for general audiences. We do not knowingly collect personal information from children under 13 (or the equivalent minimum age in your region).

Security

Practice data is stored within the app’s sandboxed storage on your device. Purchase information is transmitted over encrypted connections by Apple and RevenueCat. No method of storage or transmission is 100% secure, but we rely on Apple’s platform protections and reputable providers.

International users

RevenueCat processes subscription data on servers that may be located in the United States. By using subscriptions, you understand that this limited purchase data may be processed outside your country.

Your choices

• Adjust sound, haptics, appearance, and other settings in Profile.
• Use “Restore Purchases” in Profile or on the paywall to recover purchases on a new or reinstalled device.
• Manage or cancel a subscription in Profile → Manage Subscription, or in Settings → Apple ID → Subscriptions.
• Delete the app at any time to remove local data.

Changes to this policy

We may update this policy as the app evolves. Material changes will be reflected here with a new “Last updated” date.

Contact

Questions about this policy: TQTechOfficial@gmail.com