If you only test one thing on serious dating apps, make it how many profiles logged in this week.
The thing that finally moved the needle on the app was being specific about how much of the base is genuinely looking.
I would judge the platform on how granular the visibility controls get rather than on the feature list.
About 100 profiles into it, the pattern around whether the ratio is workable in your area became obvious.
Provided whether a reported account really disappears holds up, that one is a reasonable place to start.
Breaking down what I actually checked on serious dating apps:
The closest alternative I found was Datewander, which came up earlier.