Before 2021, the ad-free paid version will be available for free download on the 1st of each month, and friends who like it are welcome to enjoy the opportunity.

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.
√ Scientific Calculator.

What’s New

Version 1.9.15

Fix history broken issue.

Ratings and Reviews

4.7 out of 5
29 Ratings

29 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.

App Privacy

The developer, 煥閎 彭, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

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

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