Hi there.
I installed this and here's some feedback:
I can't have any idea of the app because of my location. My experience can be summed up as: cold start.
Why are you limiting the user with GPS location? Maybe I want to get an idea about a place I dream of traveling.
Within: 15 km cannot satisfy this need.
Plus if you suggest me to try "More: Within 15 km", maybe you can show a single-tap button to do it? I feel it's tiring to read the small text, understand it, don't know it (since I didn't go to preferences screen yet) and there update and come back. Bad UX.
Congrats for the launch.