Have you been waiting for an all-encompassing Part 135 Application to come along to assist in the laborious calculations associated with the job? Ever wonder how nice it would be to be have an iPad/iPhone App compute your “rolling” block/flight time requirements, in accordance with FAR 135.267, whether you are a single pilot (8/24) operator or dual piloted (10/24) operator? What about an App to assist with computing Departure Gradients, Climb Performance, Enroute Descents, Approach Planning Descent Distance and Timing, Landing Performance summaries including wet, dry and DAAP calculations, Runway Gradients and daily utilized aviation conversions?

The wait is over! The Pilot Aviation Duty and Performance Calculator Application offers all these calculations wrapped up in a single application. It also includes a Date Calculator that makes it easy to compute the common Minimum Equipment List (MEL) due dates or even your 30 day VOR Check. You no longer need to fill your iPad/iPhone with countless Apps to get the aviation information you desire, everything you need is included in this one simple to use App.

Although this App is geared toward Part 135 operators the various calculations can easily be adapted for use by all Part 91 General Aviation operators as well as Part 121 Commercial Airline pilots. There is something here for every professional pilot.

What’s New

Version 2.4

- iOS 11 support.

- iPhone X support.

Ratings and Reviews

3.3 out of 5
7 Ratings

7 Ratings

Mate Man ,

Good but not what I needed

My ground class worked this out on our current flight schedule and everything matched up however this app is under the accordance of FAR 135.267 (charter) ops. I'm hoping that there will be an update to switch between that and FAR 135.265 (commuter) ops. To be completely honest I don't know how and where the duty and rest requirements differentiate but overall the app is wonderful and has many applications

Aviatrix2003 ,

Love love love this app!!

I could hug whoever made this! The 10/24 is fabulous but the conversion section as well the climb/descend section have made my job SO much easier!! Thank you!!

Garjet ,

Good app, but

This is a good app, but it is annoying that the times are not saved when the app is exited. So essentially any info put into it is deleted anytime it is closed. This makes it very difficult to store hours in it. After spending $4.99, I expect something that works better.

Developer Response ,

This issue was resolved in Version 2.4. Thank you for bringing it to our attention.


Crop Applications, LLC.
2.3 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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