Right — been using this thing for maybe a few months now and it's stuck on my phone, so thought I'd chuck my thoughts in since someone asked me last week. I'm UK based, mostly stick to footie and the horses, small stakes, so take it how you like.
The reason I started using it was actually pretty stupid — I never could figure out what an each way return actually was when the place terms changed. I used to just guess and get a shock. These days I stick my stake in first, every time, even a straight one-selection punt.
The single bet calculator is the one I use most — you drop in stake and odds and you get profit and total return instantly, fractional or decimal, doesn't matter. It also handles the multiples — trebles maths, a lucky 15, a yankee, which is where I always mess it up. Have a go yourself, it's here <a href=
https://free-bet-calc.uk/bet-calculator/implied-probability>how to calculate implied odds sports betting</a> and it's free with no account nonsense.
One thing that really shifted things for me were the geekier tools. The implied probability thing which shows you what margin's baked in, and there's the kelly criterion calculator — I stick to fractional kelly because full kelly is far too aggressive. The dutch tool is decent when I'm covering two or three runners.
It's not perfect mind. The interface feels pretty plain — zero frills, looks like it was built by someone who cares more about maths than colours. Phone-wise it's fine although the lucky 63 breakdown are a squeeze. Also there's no proper app, just the site — slight shame but worth saying.
So yeah. Costs nowt, no ads shoved in your face, does what it says. If anyone honestly does the maths on paper, have a look — saves me a fair few arguments with the bookie.