I wish there was an actually good openstreetmap client with some kind of usable review integration. Nothing beats google maps reviews. Also all companies are usually most-up-to date in google maps. But the openstreetmap data, for me it's way ahead of anyone.

"Organic Maps is pure and organic, made with love: Respects your privacy ; Saves your battery ; No unexpected mobile data charges"

And OpenSource: https://github.com/organicmaps/organicmaps

But the "usable review integration" is not a solved problem yet.