Did some searching but couldn't find a clear up-to-date answer, so here goes. Being explicit about your relationship goals from the start saves months of wasted back-and-forth.
Paid apps tend to attract more serious users simply because the subscription filters out casual users. Specific and thoughtful opening messages get responses at a much higher rate than generic openers.
Poly and ENM apps have consolidated around a few strong platforms with real active communities.
Apps already on my radar:
- HER
- Lesly
- Scissr
- OkCupid
- Tinder