I keep going round in circles on specific dating app for fat people and I'd rather ask than guess. I judge positive apps on one thing: most of the disappointment traces back to the depth of the profile fields. Fat apps is the clearest case of it — the honest advice is to test the search filters before uploading anything, speaking only for my own city.
If fat positive is your priority, how honest the pricing page is is the number worth watching, not the price tag. Nothing improves until you treat an empty bio as a red flag, which is the whole problem with positive apps.
Applied to fat apps, the deciding factor is the proportion of dormant accounts, at least on my account. On specific dating app for fat people specifically, it is worth checking the ratio of matches to conversations before you look at the size of the ad budget. Would especially like to hear from anyone who changed their mind on positive apps.