# CalcTape – the calculator that keeps track

> The calculator that keeps track: long calculations stay clear and correctable. For Windows, Mac, iPhone, iPad, Android & web – free in the browser.

- Language: English
- This page as HTML: https://www.calctape.com/en/
- Updated: 2026-09-05

**CalcTape – the calculator that keeps track.** CalcTape keeps even long calculations clear and lets you change any entry afterwards – like a paper tape, only smarter. For Windows, Mac, iPhone, iPad, Android and in the browser.

## A new kind of calculator.

With CalcTape, even extensive calculations stay clear. The software makes the arithmetic visible – you create interim results and correct any number or operation afterwards. CalcTape replaces your old desktop calculator.

- **Type it in**: Enter your items as a list – step by step, with plus, minus, times, divide, exponents and percentages.
- **Comment**: Label every item. That keeps it clear what the numbers mean – today and a year from now.
- **Correct**: Change a value in the middle of the calculation. CalcTape recalculates everything instantly – no starting over.

## Calculations you can actually follow.

A classic desktop calculator only shows the final result – how you got there stays invisible, and one wrong tap means starting over. CalcTape makes the whole calculation visible and editable at any time.

- **Easy to follow**: Every number stays visible and can be labelled – it’s not just the final result that counts, but the whole path to it.
- **Mistakes cost no time**: Just correct a wrong item instead of retyping the whole calculation – CalcTape recalculates everything instantly.
- **Reusable**: Save calculations, use them as templates and run scenarios – a one-off calculation becomes a tool.

## This is what a calculation looks like.

The tape on the desktop: the items with comments and subtotals on the left, result and keypad on the right.

## Everything that replaces mental math and scratch paper.

Thought through in detail, clear to use – software you actually enjoy using.

- **The tape in view**: A long list of calculation items – with the full overview, just like an adding machine with a paper tape.
- **Correct afterwards**: Change individual items – the whole calculation is recalculated automatically and instantly.
- **Interim results**: Structure and check your calculation with subtotals in exactly the right places.
- **Comments**: Add a note to every item – the meaning and context of the calculation stay clear at a glance.
- **Right to the cent**: CalcTape works in decimals and rounds the way a bookkeeper does – percentages before they go into the total. At the end, every cent adds up.
- **Percentages and tax rates**: A percentage refers to the running total; the operator in front decides whether it is added or subtracted. CalcTape writes the resulting amount beside it. The tax keys know the rates of your country.
- **Variables & named values**: Work with variables, parentheses and trigonometric functions – for easy-to-read, “speaking” calculations.
- **Programmable buttons**: The preset tax keys can be edited in every edition. Your own keys and whole keypads come with Pro.
- **The worksheet**: A sheet that is always open and saves itself. Whatever you work out in between is still there the next time you start.
- **Save & open**: Save calculations as files and reopen them anytime – with automatic recalculation. With Pro, any number of them sit side by side.
- **Templates & what-if**: Use files as templates: change individual values and run variants or scenarios in no time.
- **Print and export**: Print with preview, save as PDF or HTML, copy with formatting into your own document – columns, green comments, red negative amounts. Excel with Pro.

## Three tiers, one calculation core.

The full calculating comfort is in every edition. What the tiers add on top is here; which ones exist on your device and what they cost is in the overview below.

## CalcTape for every device.

Whether on your PC, your Mac, on the go on your phone or right in the browser – your tape is always there.

## Built by people who take software seriously.

## Answered in brief.

## Try CalcTape for free.

## Platforms

- [CalcTape for Windows](https://www.calctape.com/en/calctape-windows.md) – The desktop calculator that keeps track, for your PC. – Price: free / 7.95 € – New Windows version in the works – no download at the moment
- [CalcTape for Mac](https://www.calctape.com/en/calctape-mac.md) – The adding machine for your Mac. – Price: 6.99 €
- [CalcTape for iPhone & iPad](https://www.calctape.com/en/calctape-ios.md) – Calculate, comment, correct – always with you. – Price: 2.99 €
- [CalcTape for Android](https://www.calctape.com/en/calctape-android.md) – Simple calculating on your Android device. – Price: free / 4.79 €
- [CalcTape Web](https://www.calctape.com/en/calctape-web.md) – CalcTape right in your browser – no installation. – Price: free
- [CalcTape Business](https://www.calctape.com/en/calctape-business.md) – Replace every desktop calculator in your company. – Price: on request

## Editions

The full calculating comfort is free – Pro and Business add professional and company features.

| Platform | Freeware | Pro | Business |
|---|---|---|---|
| Windows | free | 7.95 € | on request |
| Mac | – | 6.99 € | – |
| iPhone & iPad | – | 2.99 € | – |
| Android | free | 4.79 € | – |
| Web | free | – | – |

Pro pricing varies by platform (partly due to app-store fees). Business is based on Windows. The new Windows version is still in the works – the prices shown apply once it is released.

## Manuals & FAQ

- https://www.calctape.com/en/handbuch.md

## Contact

- support@calctape.com
- https://www.calctape.com/en/contact