Tried POF, OkC and Tinder. None of them is ideal -- you just aren't gonna find your soulmate without a lot of effort, at least as much as it takes to find one in real life -- but Tinder is definitely my favourite because it's the most casual (in terms of informal atmosphere; it's not so much a hookup app any more) and has the most women on it, so while you won't find the love of your life, you can certainly find an ersatz-soulmate to kill some time with.
POF and OkC are a waste of time IMO, especially POF. OkC is pretty dead in my area and POF is full of girls who have the healthy glow of someone who got knocked up at 16 and aged another 30 years in the space of four. (And yet, sadly, only physically.) Most OkC girls are butch feminists with
neon green hair but I occasionally strayed across ones disguised as hot, artsy free-spirited types. I only dated one girl from OkC, although she was actually pretty great. Never went on a date with a girl from POF. It's a densely populated ghost-town and most of the denizens are worn-out hags, even the ones who are still 20.
I only use Tinder now, and I usually have better luck just going out and enjoying myself without making an explicit effort to get laid. I have a vague idea that at least three or four girls in my social circle would sleep with me if I pushed the idea, but none of them are particularly hot, so I just let my ego feed on that vague idea. Anyway, about two months ago a new girl around said "Hi" to me in a club and I said "Hi" back and left to get myself another drink. A month later she saw me at a party and asked why I blew her off. A few hours after that she was blowing
me off up against one of those smallish mausoleums that bereaved grandiose narcissists who want to play Pharaoh but can't afford a real tomb have built around their dearly departed.
Anyway, I find life tends to throw good things your way when you stop trying to force it, like a spiteful friend who makes a point of offering everyone else gum when you badger him for a piece (that never actually happened to me btw). Of course the mechanism that is really at play is the evident absence of desperation. It's a DHV that girls pick up on. In the story above, I just glanced back, said "Hi", stood up and wandered off. It wasn't a conscious tactic, I simply didn't feel like talking and wanted another drink. Later, when she asked me why I blew her off, I told her I just felt like it, followed by something like "You seemed to like it though", to which she replied that girls tend to like a man who ignores them. Obviously everyone on this site knows that already, but I was mildly surprised to hear her actually say it. I just pretended it was news to me and made a mental note to do it on purpose some day.