Hoping someone here has actually tested dating sites for married people rather than just read about it. Applied to married sites, what decides it is how much sits behind the paywall, not the length of the feature list. Same story on cheating sites: the practical move is to keep a note of what you actually spent.
Look closely at cheating married and the reply rate matters more than the app store rating, as far as I can tell. The cheating married case is instructive — half the frustration disappears once you set the radius tighter than feels natural. Cheating married is where I'd start, since the gap between sign-ups and active users collapses as soon as the platform buries the cancellation flow.
The cheating sites angle is worse, because the proportion of dormant accounts does more work than whatever the landing page promises. The reason dating sites for married people keeps coming up is simple: the honest advice is to test the search filters before uploading anything, though I'd want someone to check me on this. Is cheating even the right thing to be optimising for here?