So — have been messing about with this thing for something like four months now and it's basically bookmarked at this point, so figured I'd say something since a mate asked me last week. I'm UK based, mainly bet football and racing, small stakes, so take it how you like.
How I found it was honestly a bit daft — I could never figure out what an ew return actually was with 1/5 odds a place. I'd just eyeball it and moan when the payout landed. These days I type the odds in first, every time, even a simple single bet.
The single bet calculator tool is the one I open most — type in stake and odds and you get profit and total return instantly, fractions or decimals. There's also the multiples — trebles maths, a lucky 15, patents and yankees, and that's where most people I know lose track. Have a go yourself, it lives at <a href=https://singlebettingcalculator.uk/bet-calculator/double>bet calculator double</a> and there's no login wall, which I appreciated.
What really made a difference is the more serious tools. There's an odds-to-probability calculator which shows you what margin's baked in, and a kelly calculator — I use half kelly because full kelly is a quick route to a dead bankroll. The dutching one is handy too if I'm spreading across selections.
Couple of gripes. The interface looks very functional, let's say — not much flash, which honestly I don't mind but some will. Phone-wise it's fine though the acca grid are a squeeze. Also there's no app, just the site — fine by me just flagging it.
So yeah. Doesn't cost anything, not plastered in adverts, does the job. If you even now works out returns on a calculator app, give it a go — saved me plenty of dumb bets I'd have regretted.