Email support
For bugs, feedback, accessibility, localization, or calculation questions.
support@onsitemath.com →SUPPORT / 01 We can help
Back to
the build.
Tell us what happened, what you expected, and which device and iOS or iPadOS version you use. Please do not include private client or project information.
Restore Pro
Open Settings → Onsite Math Pro → Restore Purchases. Use the Apple ID that made the purchase.
Check a result
Confirm units and inputs, then review the displayed assumptions. Never cut or order from an unverified result.
Local app data
Jobs and calculations stay on your device. Keep device backups if the records are important.
Start free, then choose Pro
The fraction calculator and unit converter stay free. Each Pro tool includes one free try with your own measurements. Pro adds unlimited tool use, jobs, material lists and PDF reports. Monthly and yearly subscriptions renew automatically; Lifetime is a one-time purchase. Apple shows your local price and purchase terms before confirmation.
Manage purchases safely
Restore with the Apple Account used to purchase. Manage or cancel a subscription in Settings → your name → Subscriptions. Buying Lifetime does not automatically cancel a subscription. Keep important records and exports backed up before deleting the app.
Response time
We normally reply within two business days. Complex calculation reports may take longer while we reproduce the exact inputs.
Useful details
- Onsite Math app version
- Device and operating-system version
- Selected locale and measurement system
- Exact steps and inputs that reproduce the issue
- An optional image with sensitive project details removed