Photo taking doesn't work. I contacted the developer with bug info but he wasn't able to figure it out. Frustrating because it takes time to compose a nice photo with the peaks aligned correctly (default is never aligned even close) and then it fails to take the photo. Made 20 attempts and 18 times it failed. Otherwise a good app if you don't use the photo feature.

Absolute must, one-of-a-kind functionality, indispensable if you live, work, or otherwise spend time anywhere with an open view of the ocean, coast, lake, valley, or other expanse. You may be surprised what's actually visible out there on a super-clear day! One-time price is a pittance for what this powerful app serves up! Interface could be improved just in tiny ways (eg, making entry of a partial address in viewpoint selection result in a drop-down of choices via API), still 5 stars by far

Better than most with room for improvement. Its hard to read outdoors because it's black and white with whisper thin lines and tiny text (would be nice if text could magnify). The field is view doesn't precisely line up with what the eye sees. You have to try to first find a peak you can match up then go from there. My biggest criticism is that the silhouettes of the peaks are a bit lacking in detail so for example clearly jagged peaks look quite rounded in the app making them harder to ID.