OK — been using this thing for about six months now and it’s stuck on my phone, so thought I’d write something up since someone asked me last week. I’m UK based, generally bet football and racing, small stakes, just so you know where I’m coming from.

How I found it was genuinely a bit daft — I could never work out what an ew return actually was with 1/5 odds a place. I’d just wing it and moan when the payout landed. Now I type the odds in first, every time, even a simple single bet.

Their single bet calculator is the bit I open most — you drop in your stake, the odds and it shows returns straight away, either odds format. It also handles the multiples — trebles returns, lucky 15s, patents and yankees, and that’s where most people I know got it wrong. If you want a look, it lives at [url=https://free-bet-calc.uk/bet-calculator/betting-margin]pinnacle margin calculator[/url] — free, no signup.

The thing that genuinely made a difference were the geekier bits. There’s an odds-to-probability converter which shows you how much the bookie’s taking, and there’s the kelly criterion calculator — I stick to fractional kelly as the full version is terrifying. Dutching calculator gets used a fair bit for when I’m splitting a race.

It’s not perfect mind. The design looks pretty plain — zero polish, looks like it was built by someone who cares more about maths than colours. Phone-wise it’s usable though the acca grid are a squeeze. There’s no proper app, it’s a website and that’s it — slight shame but you asked.

So yeah. Costs nowt, no ads shoved in your face, does the job. If you honestly does the maths on paper, try it — saves me a fair few dumb bets I’d have regretted.