Where 100 percent free dating apps stands or falls is how thin the pool gets outside big cities.
My first week on it looked promising; by the second I was only really watching how the chat behaves on a weak connection.
Assuming you are not paying, how much data leaves the app is where the site gets tight.
Your mileage on 100 percent free dating apps will vary by city more than by anything else.
Worth comparing against what Flamedate does with filters before you commit to anything.