10-Key Calculator
4.2star
11 reviews
500+
Downloads
Everyone
info
About this app
This calculator helps to make summing a large list of numbers easier to type in.
An important note to those that are not aware of "adding machine" calculators: they do not add/subtract numbers in the way that you may be used to. For instance, most calculators to subtract 5 from 10 would have you key in "10", "-", "5", "=". For this calculator and other adding machines, you instead key in "10, "+", "5", "-". Note that you follow each number with it's positive or negative sign, instead of thinking of the calculation as a formula.
Double-tap or long-press a tape entry to edit the value.
My wife Cassandra is an accountant who loves the 10-key style "adding-machine" calculator she uses at work. Unfortunately, she could not find one to download and use for Android. I developed this app to fill that need for her, and realized that some of you may also have this need. I hope this app finds you well!
Adding machine icons created by Freepik - Flaticon
An important note to those that are not aware of "adding machine" calculators: they do not add/subtract numbers in the way that you may be used to. For instance, most calculators to subtract 5 from 10 would have you key in "10", "-", "5", "=". For this calculator and other adding machines, you instead key in "10, "+", "5", "-". Note that you follow each number with it's positive or negative sign, instead of thinking of the calculation as a formula.
Double-tap or long-press a tape entry to edit the value.
My wife Cassandra is an accountant who loves the 10-key style "adding-machine" calculator she uses at work. Unfortunately, she could not find one to download and use for Android. I developed this app to fill that need for her, and realized that some of you may also have this need. I hope this app finds you well!
Adding machine icons created by Freepik - Flaticon
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Ratings and reviews
4.6
10 reviews
Jackie Pointer
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April 18, 2025
it's good for adding and subtracting but what about the other functions.
will-i-am.dev
April 18, 2025
Hi Jackie! Thanks for trying my app out. This is a hobby of mine and I built this app for my wife. It worked great for her so I shared it with you all for free in it's current state! I got a few requests to add multiplication and division - and I'm working on it in my spare time. It's close and I hope to have it ready in a month or two. Thanks!
Alex Rohmann
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April 18, 2023
This is the adding machine I've always wanted. Perfect for accounting work. Really appreciate how it shows the input history and notation.
4 people found this review helpful
Kyle Noorman
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August 20, 2023
Awesome 10-key app. Tape is visible and editable. Must have for accountants. Will be awesome for inventory counts.
2 people found this review helpful
What’s new
Formats numbers with thousands separators.
App support
About the developer
William Charles Herrmann III
me@will-i-am.dev
578 Division St
Coopersville, MI 49404-1007
United States
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