Works well, responsive developer The app does what I expect, and the developer was responsive to questions.
Pretty good It's missing a few essential features: copy and move checklists.
The Android version of this app crashes when the screen is rotated. QRouting's help desk told me that it was a known bug and would be fixed shortly in the next release. That was 4 weeks ago and still nothing. I notice that the current version (ver 2.02) was released in September 2014. If bug fixes haven't been released in a 15 month time frame, I'd guess you'd have to class this as "mature" software that isn't supported.
Fixed bug, not rotating screen in some devices
Quick calculation of the forward link from a ground station to an aircraft
Flying is complex. Let the Airbus A320 Checklist do the heavy lifting for you.