Compound Interest Calculator + is an award-winning iPad & iPhone app designed to quickly and easily compute compound interest with variable duration, additions, interest, inflation, and frequency. Enjoy a professional, intuitive interface with quick access and amortization schedule via a single swipe. Results are updated automatically, and all values are saved and loaded at each launch, allowing you to quickly pick up where you left off. Tap any result to copy, or email the full amortization schedule with two taps!


· Results are automatically updated as you work.

· Full support for iPad/iPod touch/iPhone.

· Complete display support for all iPhones/iPads supporting iOS 7+.

· Make Additions/Deductions Daily, Weekly, Bi-Weekly, Monthly, Bi-Monthly, Quarterly, Semi-Annually, or Annually.

· Compound Interest Daily, Weekly, Bi-Weekly, Monthly, Bi-Monthly, Quarterly, Semi-Annually, or Annually.

· Duration from 1 to 9999 Days, Weeks, Months, Quarters, or Years.

· Inflation adjusted result provided.

· All values are saved and reloaded at launch.

· Save and load via Favorites.

· Visualize your results with an automatic graph.

· Email results including a graph.

· Supports very large sums.

· Supports negative values.

· Intuitive & elegant interface.

· Uses a large numeric keypad for easy input.

· Tap to easily email the full amortization schedule.

· Support for international currencies.

· Fully translated to French, Italian, Spanish, German, and Russian.

· Tap any result to copy.

· Feedback, Support and Online Help built-in.


“Very nice design! Just what I needed!, A+”

“Favorites makes this app complete! Great app!!”

If you have feedback, a suggestion, or need support, use the “Email” menu to easily contact us directly. We are always interested to hear from you and your input helps us know which features to build into updates. If you find our app useful, please leave a review!


What’s New

Version 5.3

· Support for Negative values
· Faster Computation
· Larger Sums supported
· Split-screen app support
· iPad portrait view support
· Updated UI
· Faster bug fixes and updates thanks to more advanced crash reporting built in.
· Many bug fixes

Ratings and Reviews

1.9 out of 5
14 Ratings

14 Ratings

Skeegal ,

App locked up and never worked

This app should be deleted from the App Store. It's offensive that the developer is advertising for this yet knows it doesn't work. This let me change a couple of inputs and then froze up. I restarted the app 5 Times and it would never let me enter any inputs after the first time it froze. This is a fraudulent app and I will be reporting I to apple. Ive never downloaded a paid app that simply didn't work, until now. This app needs to be removed from the App Store. I see the same complaints as mine were made several months ago.

VanRyker ,

Good idea and format but doesn’t work

Sorry I hate to be mean but this was just so extremely buggy and lacks actual functionality. I’m surprised it’s even being sold as an app on here. I feel cheated - a refund would be nice.

I’m on IOS 11 on iPhone SE

Roony515 ,

Best app for investors!

As an investor, this has helped me estimate my future earnings by compounding my account throughout the year. Works wonderfully!



Brian Boles
4.9 MB

Requires iOS 7.1 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Italian, Japanese, Russian, Simplified Chinese, Spanish, Swedish

Age Rating
Rated 4+


  • Family Sharing

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

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