The best alternatives to Must See Places are Detour, Roadtrippers, and Wikiscope. If these 3 options don't work for you, we've listed a few more alternatives below.
Wikiscope uses your phone's current location to find Wikipedia articles tagged to the world around you and overlays them on to your camera using Augmented Reality. You can view articles on a 2D map too.
YourTour enables anyone to create hyperlocal GPS-guided audiovisual tours via their phone in a matter of hours. Sync via Bluetooth for social exploring. So Tour Creators enjoy no technological barriers and no geographic boundaries to tell the story they’ve always wanted, while Explorers enjoy the immersive experience of exploring with a local.
Use Traverse to explore new places when I go for a run or a cycle. Think of it as a scratch map, or ‘fog of war’ over the world map. Each activity reveals more areas of the map. Connect my Strava account to Traverse or record in the app, and explore more areas of the map with each trip.