Putting this to the room because how usable is pof free compared to paying is where I keep getting stuck. Applied to usable mainstream apps, what decides it is the signal-to-noise in search, not star ratings from strangers. Every time upgrade comes up, the time it takes to get a first reply matters more than the marketing copy, from what I've seen.
With upgrade usable, most of the disappointment traces back to how much sits behind the paywall. If upgrade mainstream apps is your priority, the platform makes verification optional and then hides who has done it, so it pays to screenshot the pricing page in case it changes.
Upgrade usable is where I'd start, since the reply rate outweighs how slick the interface looks. The platform hides read receipts on the free tier, so people churn out before anything happens — and that goes double for how usable is pof free compared to paying. Is upgrade even the right thing to be optimising for here?