Support
Email us with the app name, your device model and a short description of the problem. A screenshot helps.
Common questions
How do I get a refund?
Purchases made through the App Store are handled by Apple. Request a refund at reportaproblem.apple.com, signed in with the Apple Account you used to buy.
I bought something but it's not showing. How do I restore it?
Open the app's settings and tap Restore purchases. Make sure you're signed in to the same Apple Account you used for the purchase.
Will I lose my data if I change phones?
App data is stored on your device. It moves to a new phone when you restore from an iCloud or device backup. Deleting the app deletes its data.
I found a calculation that looks wrong.
Email us the exact inputs and the result you expected. We check every report against the original calculator's behavior and fix confirmed issues in the next update.
Is the calculator app made by the calculator's manufacturer?
No. It is an independent study tool and is not affiliated with any calculator manufacturer or exam body.