### Calculate

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

App Store

Online and live voting winner

Mobile Apps Showdown 2013Winner and users' choice

TabbyAwards 2015Winner

Appy Awards 2016

Powered by

### 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.

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