So — have been messing about with this thing for something like five months now and it's stuck on my phone, reckon I'd say something since a lad on another thread asked me a few days back. Am in the UK, mostly stick to footie and the horses, nothing mad, so take it how you like.

What got me on it was actually pretty stupid — I never could work out what an ew payout would be with 1/5 odds a place. Basically I'd guess and moan when the payout landed. Now type the odds in before every slip, even the boring singles.

The single bet calculator tool is the one I open most — you drop in stake and odds and you get the return straight away, either odds format. Same tool covers the fiddly ones — doubles and trebles returns, lucky 15s, patents and yankees, and that's where most people I know mess it up. Have a go yourself, it's over at <a href=https://single-calculator.com/bet-calculator/super-heinz>what is a super heinz in betting</a> — free, no signup.

One thing that actually made a difference were the nerdier tools. There's an implied probability thing and it makes obvious the overround, and a kelly calculator — I stick to fractional kelly because full kelly is terrifying. The dutch tool gets used a fair bit for when I'm splitting a race.

It's not perfect mind. The interface looks a bit basic — no frills, looks like it was built by someone who cares more about maths than colours. On my phone it's fine but the bigger tables are a squeeze. Also there's no proper app, just the site — doesn't bother me but you asked.

Right, that's me. Free, barely any ads, does the job. If anyone still works out returns on a calculator app, try it — saves me a load of arguments with the bookie.