TrevorK covered most of it. The bit I would add on polygamy dating apps for finding sister-wives is below.
If you only test one thing on the platform, make it whether the search actually respects what you set.
Took me about 6 weeks on polygamy dating apps for finding sister-wives to work out that the real question was whether the filters survive a refresh.
Assuming you're not paying, whether the search actually respects what you set is where the service gets tight.