Maybe the best of few, but....
One big negative is that it assumes you will be doing the return route and will hear more then. There should be a way to set it to play all information as you pass, rather than only one direction.
The narrators pronunciation of Hawaiian is sometimes good, but sometimes not so much; most visitors probably wont notice.
Historical information is interesting but spotty. Its enough to help visitors know more about the history and culture of this island, though.
Since there isnt anything better as a road guide, this one is well worth getting to learn things as you drive. Supplement it with a good book to learn more when youre back at the resort. Hawaiian culture is fascinating; dont spend all your time on the beach. Get this app and take a drive!
MakanaKane about
Big Island Hawaii Gypsy Guide, v1.1