Terms of Use — Math Magician: Mental Math

Last updated: 26 September 2026

These terms are the agreement between you and Imran, the developer of Math Magician: Mental Math ("the app", "we", "us"). By installing or using the app you accept them. If you do not accept them, please do not use the app.

The short version. Part of the app is free, with no account and no card. Math Magician Pro opens the rest. You can buy it once (it never renews) or, where offered, as a monthly subscription. Everything is sold through Google Play: you cancel a subscription in Google Play, and refunds are handled by Google Play.

1. What the app is

The app teaches mental-math tricks and lets you practise them. It is an educational tool. We do not promise any particular score, grade or result.

2. The free part

You can use the free part of the app without paying and without an account. We may change what is free for new content, but we will not take away anything you have already paid for.

3. Math Magician Pro, prices and billing

• What it is. Math Magician Pro opens the parts of the app that are marked Pro. The purchase screen lists them before you pay.
• How it is sold. As a one-time purchase that never renews and, where offered, as an auto-renewing monthly subscription. Both are sold and processed by Google Play Billing.
• Prices. You pay the price Google Play shows you, in your own currency, before you confirm. Prices differ between countries and may change; a change never affects something you have already paid for.
• Renewal. A subscription renews automatically each month at the then-current price until you cancel. The one-time purchase does not renew.
• Cancelling. Cancel a subscription in the Play Store under Payments & subscriptions → Subscriptions, not inside the app. You keep access until the end of the month you have paid for.
• New phone. Use Settings → Restore purchases in the app, signed in with the same Google account you bought with.

4. Refunds

Purchases are made through Google Play, so refunds follow Google Play's refund policy and are requested from Google, not from us. Where the law of your country gives you more rights to cancel or be refunded, those rights apply and nothing here limits them.

5. Your progress

Your learning progress lives on your phone. Keeping your phone and its backups is your responsibility; we cannot recover progress we never received. What we do with the little data that leaves your phone is in our Privacy Policy, and how to delete it is on Delete your data.

6. Fair use

Please do not: use the app to break the law; try to get paid content without paying; or interfere with, overload or reverse engineer the app or the services behind it.

7. Content and ownership

The app, its lessons, questions, explanations, artwork and name belong to us and are protected by copyright. You get a personal, non-transferable licence to use the app for your own learning. You may not copy, resell or redistribute its content.

8. Changes and availability

The app works offline. Buying, restoring purchases need the internet and depend on services we do not control, so they may sometimes be unavailable. We may add, change or remove features. If we ever have to remove a paid feature entirely, we will say so in the app in advance.

9. Disclaimers and liability

The app is provided "as is". As far as the law allows, we do not promise that it will be uninterrupted, free of errors or fit for a particular purpose, and our total liability to you for any claim connected with the app is limited to what you paid us for it in the twelve months before the claim. Nothing here limits liability that the law does not allow to be limited, such as for death or personal injury caused by negligence, or for fraud.

10. Children and parents

The app is for learners of all ages, including children. If you are under the age at which you can agree to these terms on your own in your country, a parent or guardian needs to agree to them for you, and any purchase should be made or approved by them. Google Play lets parents require approval for purchases (Family Link or a purchase password).

11. Ending this agreement

You can stop at any time by uninstalling the app. We may end this agreement if you seriously or repeatedly break section 6. Ending it does not by itself give a refund for something already paid for.

12. Changes to these terms

If these terms change, we will update the date at the top of this page. Continuing to use the app after a change means you accept the updated terms.

13. Governing law

These terms are governed by the laws of Bangladesh, and the courts of Bangladesh have jurisdiction, except where the law of the country you live in gives you the right to bring a claim in your own local courts.

14. Contact

Questions about these terms: support@learningonmyown.com