Ava covered most of it. The bit I would add on popular dating app is below.
Anything I recommend around popular dating app has to clear one bar, which is whether the useful settings are buried.
I kept notes for a month on the site because I kept losing track of whether the useful settings are buried.
Where the site works it works fast; where it does not, whether the interface gets in the way is usually the reason.
The thing nobody mentions about the service is whether the ratio is workable in your area.
Reply rate on the service roughly doubled once I stopped leading with a compliment, though how the match quality holds up past the first day never budged.