• Apple released it's annual update - iOS 17 for both iPhones and iPads. After preliminary testing we see no issues with both Logbook Pro and APDL on iOS 17. We will continue our thorough testing with the public release and follow up should we find any issues.

    We are giving a green light on iOS 17 for all of our iOS apps.

Column Math?


Mar 2, 2006
Southern California
What's the chance of a feature to do limited mathematical operations with custom columns? I'd like to enter beginning and end Hobbs and/or Tach times (especially in the cool new iPhone App) and have them subtract end from beginning to give me an elapsed time or duration. This could be implemented as an option for flight duration, along with the block time and takeoff/land options.

I know this feature would be of limited use...mostly for those of us trying to track time on one particluar airplane (mine). Certainly, the airline dudes wouldn't be interested...unless they own their own airplanes. However, there might be uses for such arithmatic that I haven't thought of.

I have been keeping tach and hobbs time, as well as fuel and oil added and, while I realize your program is not optimized for aircraft maintenance, it would be nice to dump my simple spreadsheet and keep all the info together.

Thanks for a great program,
Gary Aldrich