Who you see and why
Your location
The app uses your approximate location, or a city you choose. Your exact position is never shown to anyone: other people see only a rough distance, such as "less than 5 km".
You can turn off "Show my distance" in Settings.
Filters
Set the age range, distance and what you are looking for with the filter button on Discover. Filters work both ways: you only see people who would also like to see you.
Activity status
"Online" and "Active today" are shown only if you show yours too. You can choose who sees it in Settings.