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Retro 15C

By Greg Hewgill

This app is only available on the App Store for iOS devices.


Students and scientists from the 1980s will remember the classic RPN scientific calculators. These calculators strike a perfect balance between functionality and complexity.

* Complex number arithmetic and trig functions
* Matrix calculations
* Numerical root finder
* Numerical integration
* Statistical functions, linear regression
* Fully programmable

This app is completely free, no ads or extra bits to buy. I love this calculator and I like to share.

What's New in Version 1.1

Updated 64 bit build that will survive long past the next iOS update.

Also, the calculator display now scales correctly for all iPhone screen sizes.

The name of the app has been changed to "Retro 15C". It's still free and always will be.

Thank you for your support!

iPhone Screenshots

iPhone Screenshot 1
iPhone Screenshot 2

Customer Reviews

De las mejores aplicaciones!

Una excelente calculadora con mucho potencial.

Retro 15C
View in iTunes
  • Free
  • Category: Utilities
  • Updated:
  • Version: 1.1
  • Size: 5.6 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.

Customer Ratings

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