Great hiking app!
Really great application for hiking. Ive used in remote High Sierra to Joshua Tree, always had accurate GPS readings. Also good for elevation tracking and waypoint markers. Compass integration also super helpful.
All topo map downloads are free after buying the app and are automatically stitched together to create larger map areas.
I always bring a paper map, but generally this is what look at most while on the trail.
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iHikeGPS : Classic Topo Maps, v6.3.6