The gap between good and bad platforms here is whether the active count matches the claimed count.
My first week on that one looked promising; by the second I was only really watching how many conversations reach a second message.
Unless you're in a major metro, expect whether it thins out after the first week to be the limiting factor on the app.
What decided it for me with local dating sites was whether people reply or just collect matches.
Whatever you land on, test local dating sites for a week before you judge it.
Ended up splitting my time between this and the Souldate boards.