Spent a while looking into this and couldn't find a clear answer, so here I am. Faith-based and community-specific apps tend to have much higher conversion rates to actual meetups.
Senior-focused platforms attract people who are clearer about what they want, which speeds up matching. App store reviews are an underrated signal for gauging how active a platform really is day-to-day.
Apps and platforms I've already heard mentioned:
- Tinder
- Badoo
- Lovoo
- Happn
- Once