Caldy

When you need more than a basic calculator, but do not want a spreadsheet.

Caldy is a visual calculator: linked values are clearly shown with connecting arrows. The history is right in front of you.

Caldy is a dynamic calculator: any number or operation can be changed and the linked expressions are updated automatically.

Numbers can have labels, making the expressions easier to read.

Results can be dragged and dropped on placeholders to connect expressions.

Sub-expressions can be extracted to structure complex calculations.

Sub-expressions can be extracted to structure complex calculations.

Caldy percentage increase function, very handy to calculate tips or tax such as VAT.

Caldy can plot expressions. Plots are zoomable and dynamic as well. Pinch on the plot to zoom in or out.

Caldy is document-based. You can organize your calculation sheets like files, on your device or even on iCloud.

Caldy has math functions, trigonometry functions.

Caldy supports dark mode.


A new intuitive calculator.

- Familiar interface
- Edit expressions anywhere anytime, results are updated automatically
- Multiple sheets
- Plots, pinch to change X range
- Dark mode
- Trigonometry functions, exponential, logarithm, percentage increase, absolute function
- Add labels to numbers
- Swap operands, extract subexpressions, move expressions