Grindr is a popular dating and social app for gay, bisexual, transgender, and queer people. It was the first such app to incorporate geolocation functionality which allows its users to view others who are closest to them. The app aims to help LGBTQ people by creating a safe space for users to discover and navigate the queer world.
The Grindr app is available on iOS and Android smart devices. If you are having an issue with the app you can report the problem here on this Grindr outage page and check for other reports.