Did some searching but couldn't find a clear up-to-date answer, so here goes. Cougar and age-gap dating communities have become far more mainstream and accepted than they used to be.
Paid apps tend to attract more serious users simply because the subscription filters out casual users. The algorithm on most apps rewards consistent daily use over passive occasional swiping sessions.
Apps already on my radar:
- Bumble
- Hinge
- Tinder