Support

Open Settings → Purchases → Restore purchases in the app. Make sure the phone is online and signed in to the same Google account (Android) or Apple Account (iPhone, iPad) you bought with. If it's still locked, email us with your order number.

Sign in to the same Google account or Apple Account, install Shimsy Maths, then use Restore purchases. Your unlocks come from the store, so you never pay twice.

If your old phone backs up (to your Google account on Android, to iCloud on iPhone), or you copy it across when you set up the new phone, your progress comes with it. If it doesn't come across, use Settings → Export Backup on the old phone and Import Backup on the new one. Unlocks don't move between Google Play and the App Store.

On Android, within 48 hours of buying, you can request one straight from Google Play: open your order history and choose Request a refund. After that, email us with your order number and we'll look at it fairly. On iPhone and iPad, Apple handles refunds: ask at reportaproblem.apple.com. See section 5 of our terms.

Unlock the course you're studying. GCSE covers both Foundation and Higher, so switching tier never costs extra, and it includes the KS3 papers too. IGCSE covers both Core and Extended, so switching tier doesn't cost extra there either. It's a separate course from GCSE, with its own unlock. A-level Maths covers AS and the full A-level, and so does A-level Further Maths. Maths Challenge is one unlock for all three levels: Junior, Intermediate and Senior.

No. Practice is free, and each course unlock is a single payment.

Only to buy or restore a course, and for the Weekly Challenge. Everything else, including the exam papers you've unlocked, works offline.

The content follows the national curriculum for KS3 and the GCSE and A-level subject content that every exam board in England shares, so it suits AQA, Pearson Edexcel, OCR and Eduqas students alike. In Further Maths, Core Pure is the same for every board and the option papers here are Further Pure, so check which options your school takes.

IGCSE follows the Cambridge IGCSE Mathematics (0580) syllabus, Core and Extended. Its mocks come in two sets for each tier, set out like Cambridge's papers: Papers 1 and 3 for Core, Papers 2 and 4 for Extended, with Papers 1 and 2 taken without a calculator. Prices in its questions are in dollars.

Shimsy Maths isn't affiliated with any exam board. Its questions, worked solutions and recap cards are all written by Shimsy Maths.

Thank you for telling us. Tap Something wrong? on the question and pick a reason. That tells us which question it is, so there's nothing else to fill in. We check every report and fix the mistakes we find.

If you'd like to tell us more, email us with the course, the topic or paper, and the question number, and a screenshot if you can.

No. It compares your score on our papers with averages of recent grade boundaries, as a guide to where you stand. Only your teachers and the exam boards can predict or award grades.