1. Other geolocation apps were so bloated with useless features that they got in the way of what I needed.Nice and quick to be able to give rescuing party location, may not be within 1m but when you need rescuing it's close enough.Works often.
2. I used this app on a recent backpacking trip.
3. It's very stripped down and minimalist, and worked exactly as it should.
4. 3.44m variance.