Right — been on this thing for maybe five months now and it's stuck on my phone, so thought I'd say something since someone asked me a few days back. Am UK based, mostly do football and horses, a fiver here and there, just so you know where I'm coming from.
 
How I found it was genuinely pretty stupid — I never could get my head round what an ew payout would be when the place terms changed. I'd just eyeball it and get a shock. Now type the odds in before every slip, even a straight one-selection punt.
 
The single bet calculator tool is the one I open most — type in your stake, the odds and it shows profit and total return instantly, fractions or decimals. Same tool covers the fiddly ones — doubles and trebles maths, a lucky 15, yankees, which is where I always lose track. If you want a look, it lives at <a href=https://singlebettingcalculator.uk/bet-calculator/trixie>ew trixie</a> and there's no login wall, which I appreciated.
 
The thing that really shifted things for me is the more serious tools. There's an probability thing that shows what margin's baked in, and a kelly staking calculator — I use half kelly as the full version is terrifying. The dutch tool is decent if I'm splitting a race.
 
Not all sunshine though. Its interface feels a bit basic — no flash, which honestly I don't mind but some will. On my phone it's fine though the bigger tables make you pinch and zoom. Also there's no proper app, just the site — doesn't bother me but you asked.
 
Anyway. Doesn't cost anything, no ads shoved in your face, works. If you still does the maths on paper, try it — saves me a load of dumb bets I'd have regretted.