STEALTH Calculator : Eyes Free, Touch typing calc app app for iPhone and iPad

* The worlds first (maybe) Calculator app that can just flick all operations
* And read the calculation results in voice and sound, vibration corresponding
* Can be operated to turn off the screen by "stealth mode” (black screen mode)

You must be honest training, to get used to :-(

But, it might be super comfortable If you get used :-)


[how to calculate]
Please have the image of a “abacus".

You can input numbers in the flick up and down by one digit.
And flick left and right , input operators (× ÷ = - +) .
All you do is this.


Making it possible to work with only the movement of the finger, you can “touch typing" input without looking at the screen.

There is no doubt that you help to calculate the while looking at the documents!

In addition, the rate of registration such as the discount rate at the time of the bargain and consumption tax can be, tax calculations when shopping, discount calculation is OK in the eyes free.

Since she can without looking at the screen and is equipped "dark mode" is also (calculated stealth mode) and take the plunge.

Why do not you surprised everyone by a to "pretend that mental arithmetic" the superbrain formula?

You can type pretty quickly if you get used!