Calculate. Comment. Correct.

CalcTape is a revolutionary new kind of pocket calculator. With CalcTape, also extensive calculations remain clearly structured. CalcTape makes the arithmetic process visible - you can generate intermediate results and subsequently correct or change all numbers and operations.

- Input a long list of values to be calculated and never lose the overview - just like with an adding machine / calculator with paper tape.
- Insert comments and notes into your calculations anywhere.
- You can use intermediate results to structure your calculation.
- Use it for Money, Tax and any other percentage calculation easily.
- If you should later change digits or whole mathematical expressions, then the complete calculation is automatically updated.
- Insert new lines or delete lines inside of your calculations and see the updated results immediately.
- Save your calculations into files.
- Open the files later to change the calculations.
- Define your own functions and buttons.
- Share your complete calculation via e-mail, Airdrop and more.
- Print your calculation.
- Choose your favorite design.
- iCloud support (Mac OS 10.10 and higher). Sync your calculations with iPhone and iPad easily.
- CalcTape masters the four basic arithmetical operations, exponentials, percentage calculations and much more.

CalcTape, more than a calculator.

- Start a new calculation on the same sheet by simply tapping the "=" key twice.
- Right click a button to assign another existing function or to create a user function for it.
- If you accidentally hit "AC" you can use "Undo" to get your calculation back.

What’s New

Version 6.0.1

fixed an issue with text colors on Mojave

Ratings and Reviews

4.8 out of 5
100 Ratings

100 Ratings

Hisbonics ,

Best Calculator App - Quick and Easy to Use

I have been using this app for quite a long time now. It has an easy and clear user interface. The paper tape is what makes this the best calculator; you can see everything that you’ve entered on the tape, you can even go back and correct anything that you entered incorrectly and it will update the calculation. I like to keep notes as to why I am making a calculation and this tape allows you to add text to the right of entries and even type in a title before you start a calculation. Another great feature is that the tape can be saved. Love this! If I need to go back and check how I calculated some accounting or budget entry, I can just find the tape that I saved for those entries (you choose how to name the file) and I can check how I came about the results.

Very flexible, easy to use, clear entries. I know it has other features I haven’t used, but for those who need more advanced features like adding local taxes automatically or sending your tape to your notes program, it appears those are easy to use too.

tetvet678 ,

CalcTape Update

The app is nice. I like the visual of the ‘running tape’ string of numbers to check my work. I like the variables one is able to set up.
My only complaint so far is how to get an update from v. 1.1.1 Purchased on the Apple App Store to the newer v. 1.1.2?
I emailed the company and they replied that I would get the update through the Apple App Store. I don’t see an update option anywhere.


updates should be handled via the AppStore-App on your Mac.
If you purchased V1.1.1, the update to 1.1.2 is free.

Kind regards,
Thomas Klütsch
schoettler Software GmbH”

**UPDATE: I now have Version 1.3.0 and all is good in the world. Well, maybe not the entire globe. I find this app to be especially great at keeping a running log for my checkbook as well as previous accounting events. I find the app extremely easy to use with a good user interface. I would like to have the ability to enter Text along-side numerical entries without having to avoid any character that might be used in the numerical column. For instance (/, *, -) are not able to be entered as text when writing a Comment as they will jump back to the numerical column and initiate an action.

Nickname unknown. ,

Change default saved file location

I just bought this app and it suits my needs but I have two observations. There is no option to change the stoage option location on the computer. It would be helpful to have an option of where on the computer a user may chose as a default stroage location/folder. I hope to see it in a future update. I also noticed that I cannot add a space between lines without the app making a subtotal. Is there a way to leave a space between a list of numbers being added, like to break into groups for easier viewing? I just noticed when I print a tape, it prints the date and time at the top. Is there an option to leave this area blank or have it print the name of the document instead? Thank you-A useful app

App Privacy

The developer, schoettler Software GmbH, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer