I gave the app question a proper go for a couple of months before giving up.
The thing that kept me on the app question was how many accounts looked dormant.
If I had to name one factor in the app question it would be how the site behaved on a phone browser.
The move with the app question is to turn off notifications so it does not take over your evening.
My read is that the app question lives or dies on whether you are in a commuter town or a city.
If you're starting with the app question, be specific about what you want in the bio.
Before you commit to the app question, use separate photos from the ones on your other accounts.
That covers what I know about the app question, at least.
Datescout comes up in most threads like this one, for whatever that is worth.