So — have been messing about with this thing for about a few months now and I keep coming back, so figured I'd say something since a mate asked me a few days back. I'm in the UK, generally do football and horses, a fiver here and there, so take it how you like.
What got me on it was actually embarrassing — I couldn't ever work out what an each way payout would be with 1/5 odds a place. Basically I'd wing it and moan when the payout landed. These days I punch the numbers in first, every time, even a simple single bet.
The single bet calculator tool is the part I'm on daily — you put in stake and odds and you get the return with no faffing, fractions or decimals. There's also the bigger stuff — trebles maths, a lucky 15, a yankee, which is where I always mess it up. If you fancy a poke about, it lives at <a>matched betting blog calculator</a> and there's no login wall, which I appreciated.
The thing that really changed how I bet was the nerdier bits. They've got an odds-to-probability thing which shows you what margin's baked in, and there's the kelly staking calculator — I stick to fractional kelly since full stakes are terrifying. The dutching one is decent for when I'm spreading across selections.
It's not perfect mind. Its interface feels pretty plain — zero frills, which honestly I don't mind but some will. On my phone it's fine though the lucky 63 breakdown make you pinch and zoom. There's no proper app, it's browser only — slight shame just flagging it.
So yeah. Free, not plastered in adverts, does the job. Anyone who even now works out returns on a calculator app, have a look — it's saved me a fair few dumb bets I'd have regretted.