OK — been on this thing for about five months now and I keep coming back, so thought I'd write something up since a lad on another thread asked me last week. I'm UK based, mostly stick to footie and the horses, small stakes, for context.
What got me on it was honestly embarrassing — I couldn't ever figure out what an each way return actually came to when the place terms changed. I used to just guess and get a shock. These days I type the odds in first, every time, even the boring singles.
The single bet calculator tool is the part I use most — you put in stake and odds and it shows returns straight away, either odds format. Same tool covers the fiddly ones — acca and treble maths, lucky 15 and lucky 63, yankees, honestly that's where most people I know got it wrong. Have a go yourself, it's here <a href=https://singlebettingcalculator.uk/bet-calculator/lucky-63>free bet calculator lucky 63</a> — free, no signup.
What actually shifted things for me were the nerdier bits. There's an implied probability thing and it makes obvious what margin's baked in, plus a kelly criterion calculator — I use half kelly as the full version is far too aggressive. Dutching calculator is decent for when I'm spreading across selections.
Couple of gripes. Its interface feels very functional, let's say — not much frills, which honestly I don't mind but some will. On mobile it's usable but the bigger tables make you pinch and zoom. Also there's no proper app, just the site — doesn't bother me just flagging it.
Anyway. Free, no ads shoved in your face, does what it says. If you still adds it up in their head, have a look — it's saved me a load of dumb bets I'd have regretted.