10Calc Business Calculator

This is more than an algebraic calculator! This works just like an adding machine. If you want to stop using a separate adding machine device, this is the one to have. I stopped using an adding machine years ago and used a Windows 7 adding machine app. Now that Windows 10 is here it was great to find a premium adding machine app. Love the layout and all of the features. Printing tapes when you need them for documentation is such a nice feature. No more trying to write on small adding machine tape. I now get to write on 8 1/2 by 11 paper. I can also digitally save it. Good job Gerald and great support. 5 Stars!

Judy's has been around for years. It not only allows editing the numbers but you can insert a text description for the number which is very handy. It also allows a lot of customization. I suggest you try it! Why Microsoft still uses there old clunky calculator, I haven't a clue.

Great user interface.

Easy to use. Love the tape feature. No more dragging my old 10 key to a clients office. This should become the norm for bookkeepers and accountants. OUTSTANDING PRODUCT

A real 10-key business adding machine with simulated paper tape. In order to get the most out of using this app, you need to know or learn how an adding machine is used for accounting, including some specialized symbols and algorithms. For example, the asterisk key is the Subtotal key, rather than multiplication, and GT is Grand Total. I just downloaded it for the Surface Pro 4, and it works great in touchscreen tablet mode. In-app help is available, including right-click to pop up help over a key. Which is helpful because most people don't know what the key with the diamond symbol means, or the one with %-delta. If this is the tool you need to run calculations faster than fussing around in a spreadsheet, then the cost after the trial period is worth it.

Purchased this and was using daily and really liked it but then it began telling me that it required a network connection and would close even though I had a working connection to the internet (also somewhat worrisome in and of itself, why does an adding machine program require an internet connection to start up?) Then later it would come up and show the window just blue and then close without any messages. I have uninstalled the program and reinstalled with no change in behavior. I tried emailing the address that is linked in the "Support" link here and it was rejected as an unknown address. The "Developer Website" link just redirects back to the store listing. This was a 5 star app for me, would love to be able to use it again.