Right — been on this thing for something like six months now and it's stuck on my phone, so figured I'd say something since a lad on another thread asked me last week. I'm based in the UK, mostly do football and horses, small stakes, for context. What got me on it was genuinely embarrassing — I never could figure out what an each way payout actually was with 1/5 odds a place. I'd just wing it and moan when the payout landed. Now punch the numbers in before every slip, even a simple single bet. Their single bet calculator is the part I use most — you drop in the price and your stake and it spits out profit and total return straight away, fractions or decimals. There's also the bigger stuff — doubles and trebles maths, lucky 15s, yankees, and that's where most people I know lose track. If you want a look, it's here how to calculate a lucky 15 and it's free with no account nonsense. The thing that genuinely changed how I bet was the more serious bits. They've got an probability thing and it makes obvious the overround, plus a kelly tool — I use half kelly since full stakes are terrifying. Dutching calculator is decent if I'm spreading across selections. Not all sunshine though. The interface is pretty plain — no polish, it's clearly function over form. On mobile it's fine although the lucky 63 breakdown make you pinch and zoom. Also there's no app, just the site — fine by me just flagging it. So yeah. Costs nowt, no ads shoved in your face, works. Anyone who honestly adds it up in their head, give it a go — it's saved me plenty of arguments with the bookie.