Internal Rate of Return (IRR)

‘Quick Internal Rate of Return’ offers a fast and easy way to compute the IRR of a stream of annual amounts usually starting with an investment treated as a negative amount.

The unique data entry GUI employing sliders and buttons improves upon the more typical numeric pad mechanism. Using a slider, a plus/minus button, and addition and subtraction buttons for small adjustment, you are able to populate the annual cash flow fields between -1000 and +1000 quickly and precisely.

For entering numbers beyond plus or minus 1000 with two decimal place precision, you have the option of using a numeric keypad for data entry. The ability to switch between slider or keypad is provided on the 'information' page.

Although periodic amounts are shown as yearly amounts, the user may interpret these as generic periodic amounts. For example, each amount could be considered a quarterly amount and the IRR computed would be interpreted as the return based on that frequency as well.

The iPad version of Quick Internal Rate of Return allows you to add, retrieve, reorder, or delete data sets. It also displays a graph of the present value of the cash flows discounted at various rates between 0% and 25%.


change in version 8.5
  • GUI changes
  • Improvements to various button
  • Code refinements
change in version 8.1
  • Fixed odd bug in iPhone version that caused the app to crash
changes in version 8.0
  • iPad version now adds email, text message, and print capability. A PDF report at a resolution of 72 dpi is available for sharing
  • Also, in iPad version there are now 10 more years for data entry
  • Streamlined and improved source code
  • Because new data fields have been added, previously saved data sets will be replaced by the default data sets.
changes in version 7.1
  • Added ability to reset all data in iPhone version
  • Added warning to prevent inadvertent resetting of all data in both iPhone and iPad versions
  • GUI changes with more standard icons
  • Fixed bug in iPhone keypad display that misidentified year 1 data
changes in version 7.0
  • Complete redesign for iOS 7
  • Minimum requirement: iOS 6

revised: August 7, 2020