iPhone Screenshots


iOS10 ready

This is the pro version of the calculator.

Check and edit your data during and after the calculation.

CalcPro offers all basic and a lot of scientific and financial functions.

Take advantage of user variables and more.

Fast data entry (integrated keypad) and full edit features for your calculation.

+, -, *, /, sin, cos, tan, asin, acos, atan, sinh, cosh, tanh, pow, log, ln, sqrt, fabs, fac, madd, msub, mar, %, &, @, (, ), pi, e

Future updates will include even more features - and will be free for all existing users.

What's New

Version 7

iOS10 ready

Ratings and Reviews

Not bad for the first version


Unlike many others here, I did actually buy this program and I do have Chalkboard. I like Chalkboard for functions, but this program is much less cumbersome to use for simple calculations. First of all, this is nothing like the native Calc program. It is a non-RPN, expression based calculator, which really is the biggest draw and makes it different than most other calculators available to iPhone. It supports the use of 'e' as 'X 10^' which is also useful. It's interface and look could use some improvement. It would also be nice if it kept a ticker of previous results. But overall, it works for what it is supposed to do, expression based calculation! I would give it a 4, but am giving it a five because of all the unnecessarily harsh critics before.


Armin Heinrich
2.1 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2008-2016 Armin Heinrich


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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