The easiest way to calculate

iPhone X notch

Calculate

Write calculations naturally, and get immediate result in any format.

Detailed features
Powered byInteractive Ink

  • Write and calculate

    Simply write any calculation as you would on paper. The result is automatically calculated.

  • Edit calculations

    Interact live with your calculation: add new elements or erase naturally with a scratch gesture.

  • Solve

    Use "?" as an unknown to solve any equation. For instance, write: 2 + ? = 5.

  • Automatic vs. on demand

    Get automatic conversion and calculation or take the time you need by using calculation on demand.

  • Display mode

    Display the result in decimal, fraction or mixed numbers. Use radian or degree for trigonometry.

  • Write on several lines

    Whenever you lack space when entering a long calculation, just continue on the next line.

  • Write several calculations

    Write several calculations on different lines. Use drag and drop to easily create multi-step calculations.

  • Drag and drop

    Drag and drop numbers from and to the canvas, the memory bar or to an external app.

  • Memory bar

    Drag and drop numbers on the toolbar to store them. Reuse them by dragging them back onto the canvas.

  • History

    All your previous calculations are automatically saved. Pick one from the history to use it again.

  • Export

    Export a calculation as an image, copy a number as text via a simple tap or drag and drop any number to an external app.

Supported operators

Basic operations
++
-
×\times
//
÷\div
\cdot
::
Powers, roots, exponentials
323^2
2\sqrt{2}
13\sqrt[3]{1}
e3e^3
Miscellaneous operations
%\%
3\left|-3\right|
5!5!
Brackets
((
))
Trigonometry
cos\cos
sin\sin
tan\tan
cot\cot
cosh\cosh
sinh\sinh
tanh\tanh
coth\coth
Inverse trigonometry
acos\operatorname{acos}
asin\operatorname{asin}
atan\operatorname{atan}
acot\operatorname{acot}
acosh\operatorname{acosh}
asinh\operatorname{asinh}
atanh\operatorname{atanh}
atanh\operatorname{atanh}
acoth\operatorname{acoth}
arccos\operatorname{arccos}
arcsin\operatorname{arcsin}
arctan\operatorname{arctan}
arccot\operatorname{arccot}
arcosh\operatorname{arcosh}
arsinh\operatorname{arsinh}
artanh\operatorname{artanh}
Logarithms
ln\ln
log\log
arcoth\operatorname{arcoth}
Constants
π\pi
ee
ϕ\phi

Seriously magical the way this works. Totally blown away. Never imagined something like this could be possible -- yet here it is, and it works so well!

Gyunu chan