One correction: on the app, whether the sorting can be trusted isn't what people assume.
The measure I would actually check on it's whether it thins out after the first week.
Gave dating sites for over 60 for finding a fair run over 3 weeks and kept coming back to how many profiles logged in this week.
If you can only manage a few evenings a week, how the match quality holds up past the first day matters more than raw volume on the service.