Finally a calculator app that has it all in one!
Calculator One combines frequently used finance applications (Loan calculator + Compound Interest calculator) with the everyday use of the standard calculator. Switch easily between use of each calculator without losing input settings all within one app. Choose from various sleek and chic design color themes that sum up your persona for the day. Calculate with easy use and efficiency in style.
Do the math and save time with Calculator One.


- Standard calculator
*choose from various design color themes - new design themes to be released in upcoming version upgrades
*continuous calculation mode for easy accounting
* No annoying ads during important calculations

- Loan calculator
*amortization schedule available
*extra payment per period available
*up to 50 years of payment amortization

- Compound Interest calculator
*exact starting balance and monthly saving entries
*duration up to 100 years
*compounding rate up to 50%

- Special thanks to ClintonT designs.

What’s New

Version 1.7

This app has been updated by Apple to display the Apple Watch app icon.

Minor improvements

Ratings and Reviews

4.7 out of 5
18 Ratings

18 Ratings

MsTreehugger ,

Resourceful calc

I was looking for a loan app and found this. Comes with a regular calculator too, ha why not!? If only it could pay part of my loans, now that would be over the moon :)

Naled2016 ,

Great design and easy to use

This app looks nice! I like how it has a loan calculator and you can also use a regular calculator too. The color choices are fun also:)

Nanig04 ,

Very pretty, very nice

This calculator looks cool. I kind of know what loans are for, what’s compound interest?

App Privacy

The developer, Gustavo Suarez, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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