Paid for itself in free coconut.
We did some research on our own, but the Hana app made our trip much better and less stressful than it would have been otherwise.
There were a couple stops that I would have liked better directions to (mainly Keanae Arboretum,) and the app didnt always start talking automatically when it was supposed to. Overall though I would highly recommend it.
dbooners about
Road to Hana Maui GyPSy Guide