Contact
Email visualtales8@gmail.com. We try to reply within two business days.
When reporting an issue, it helps if you mention your phone model, your Android version, the MathDeck version (shown on the Settings screen), and what you saw versus what you expected to see.
Frequently asked questions
Why does MathDeck need internet?
Only to update currency exchange rates when you open the Currency Converter. See the Privacy page for the full story.
Where is my calculation history stored?
On your phone only. Nothing is uploaded or synced to the cloud. Clearing the app's storage or uninstalling removes it.
How do I change which calculators I see?
Open Settings > Profile and pick Pro, Simple, or Custom. The Custom option lets you choose exactly which calculators appear on the home screen.
What is Tasks mode?
MathDeck includes a simple Tasks (to-do) list alongside the calculator. Add tasks, check them off, and use the built-in per-task stopwatch to track how long each one takes. Switch between Calculator and Tasks from the top-right icon, or swipe. Your tasks are stored on your phone only - never uploaded.
The currency rates look old
Pull down to refresh inside the Currency Converter and make sure you have an internet connection. If the refresh fails, the app keeps using the last rates it had.
Can I suggest a new calculator?
Yes, please do. Email us with what you'd like and how you'd use it.
Privacy and terms
See the Privacy and Terms pages for how MathDeck handles your data and the terms that govern its use.
Reporting a security issue
If you believe you have found a security problem, please email visualtales8@gmail.com instead of posting publicly. We will reply within a few business days.