The second most interesting calculator in the world!!

√ Alien, Piano, Animals, Robot, Chinese, English. Up to 39 amazing audio effect.
√ Touch and edit.
√ Great math practices.
√ Most user friendly Calculator.
√ Tip Calculator.
√ Scientific Calculator.
√ Statistic Calculator.

Check other amazing features:

# Color hint, users can use color hint to know command such as 2^n is from x^y or 2^x and can help users to identify some command priority issues, you can choose your favorite color from the setting page.

#Basic functions
- add (+)、minus (-)、multiply (*)、divide (/).
- square root (sqrt).

#Advance functions for scientific calculations
- trigonometric functions: sin、cos、tan, sin^-1、cos^-1、tan^-1.
- hyperbolic functions: sinh、cosh、tanh、sinh^-1、cosh^-1、tanh^-1.
- advanced factorial function supports real number: n!.
- log、ln、log2、x^2、x^3、x^-1、10^x、2^x、e^x、x^y、yroot.

#bracket: easy for grouping your input.
- (、).

# Dedicated panel for trigonometric and hyperbolic functions.

# History supported, you can restore your input from history panel.

# Cache panel for trigonometric and hyperbolic functions.

==== Special Bonus on iPhone/iPod Touch =====

# Tip Calculator, including:
- Tip rate, Split, Tax, Group.

=========iPad SPECIAL Feature ==========

# Advanced functions

- Multiplication
* 1~9, 1~20 Table
* Practices

- Addition practice
* Max 10
* 1~9
* 1~20
* 1~99

- Statics function
* Data array: sort, sum, mean, standard deviation, variance.
* Possion
* NegativeBinomial
* Binomial.
* Hypergeometric


What’s New

Version 1.9.12

Fix iOS 13 incompatibility issue on iPad.

Ratings and Reviews

4.8 out of 5
11 Ratings

11 Ratings

Skipw1965 ,

Best Ever

I love this calculator. It is the best I have seen to date. I use it frequently.

BionicSoccerMan ,

Lots of potential

This calculator stands above the others in that it uses a multiline display to show the equation you entered, with the result below. Very nice approach.

However, three things hold this program back:
1) You can't tap on the displayed equation to edit it in the middle

2) This is the showstopper... The arithmetic operators aren't down the right-side of the mimetic keypad in that standard order we're all used to, they're across the top in a way that just bugs me.

3) It has two screen layouts, but the alternate view (which fixes #2 above) gives me a headache... oddly out of focus background. Also, for features like 2^n, they show the 2 in bright bold blue... It's distracting.

Note to the developers: I do think you've got a strong start, so change those few items and I'll be a convert!

Tealvr24 ,

Good start

Some minor things just for me. Could use just a click sound option instead of voice. Fix size of keys + - / and larger = would help. Add some common conversions, weight, length, pressure and force. Other than those it is still a good calculator with many features so far. I am just picky.


Eric Peng
28.7 MB

Requires iOS 10.3 or later. Compatible with iPhone, iPad, and iPod touch.


English, Simplified Chinese, Traditional Chinese

Age Rating


  • Family Sharing

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

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