Support

Questions, bug reports, or feedback about Calculator xy — we're here to help.

Contact us directly

We usually reply within 1–2 business days.

Frequently asked questions

How do I switch calculation modes?

Tap MODE on the keypad, then choose from COMP, CMPLX, STAT, BASE-N, EQN, MATRIX, TABLE, or VECTOR — the same layout as a handheld scientific calculator.

What does Premium include?

A Premium subscription unlocks cloud sync across your devices, unlimited graphing for advanced functions, and additional calculator themes.

How do I restore a previous subscription?

Go to Settings → Subscription and tap Restore Purchases. Make sure you're signed in with the same Apple ID used for the original purchase.

Can I change the input display style?

Yes. Go to Settings → Calculator Settings → Input Display and choose between Math (natural textbook style) and Line input.

Is my calculation history private?

Yes. Your history stays on your device unless you enable cloud sync, in which case it syncs securely to your account only.

I found a bug — how do I report it?

Email us at mmsbsupport@gmail.com with a description of what happened and, if possible, a screenshot. Include your device model and iOS version.