I keep going round in circles on good niche sites for older women seeking older men and I'd rather ask than guess. Same story on niche sites: the depth of the profile fields collapses as soon as the platform counts a like as a match. With niche sites, what decides it is the gap between sign-ups and active users, not the app store rating.
For niche sites in particular, the platform pushes notifications that lead nowhere, so it pays to compare two platforms in the same fortnight. Look closely at niche seeking and you get further if you give it a fortnight before judging the pool.
It is worth checking how far the free tier gets you before you look at raw member count, which is the whole problem with niche sites. When it comes to good niche sites for older women seeking older men, half the frustration disappears once you screenshot the pricing page in case it changes. Numbers on niche appreciated if you kept any.