Just downloaded that last night. Student pilot whos doing his xcs. really came in great during the flight planning AND in the plane during the approaches. I needed to recalculate the crosswinds quickly (was on downwind) since the winds were shifting and I have 7 Kt x-wind limit. Entered a few numbers and was able to request another runway just in time :-).
I havent had a change to explore all if the other functions, but so far, Id recommend it!
Ilsrwy27r about Sporty's E6B Flight Computer, v1.3.3