OK — been on this thing for maybe four months now and it's basically bookmarked at this point, so thought I'd chuck my thoughts in since a mate asked me a few days back. Am based in the UK, mainly do football and horses, small stakes, just so you know where I'm coming from.
How I found it was honestly a bit daft — I couldn't ever get my head round what an e/w return actually came to once you get five places instead of three. I'd just wing it and get a shock. Now punch the numbers in before I place anything, even a straight one-selection punt.
The single bet calculator tool is the part I open most — type in stake and odds and you get returns instantly, fractional or decimal, doesn't matter. Same tool covers the bigger stuff — doubles and trebles maths, lucky 15 and lucky 63, yankees, which is where I'd always mess it up. If you fancy a poke about, it lives at <a href=https://free-bet-calc.uk/bet-calculator/yankee>super yankee bet calculator</a> and there's no login wall, which I appreciated.
What genuinely changed how I bet were the more serious extras. They've got an probability thing and it makes obvious how much the bookie's taking, plus a kelly tool — I use half kelly because full kelly is far too aggressive. The dutch tool gets used a fair bit for when I'm splitting a race.
It's not perfect mind. The design is pretty plain — no flash, it's clearly function over form. On mobile it works but the bigger tables make you pinch and zoom. There's no proper app, just the site — fine by me but you asked.
Anyway. Doesn't cost anything, no ads shoved in your face, works. Anyone who even now does the maths on paper, give it a go — it's saved me a load of "wait, that's it?" moments.
