Been signed up at Single Bet Calculator for the best part of a year, mostly on my phone, so this is just my two pence. Found it off another forum thread, nobody paid me.
The game selection is pretty big — somewhere north of 3,000 games if the counter is honest. NetEnt is everywhere, so Gates of Olympus and the usual suspects all show up. I tend to live on Play'n GO titles since the maths feels fairer to me. The one thing that irks me — Single Bet Calculator's search bar is genuinely poor, filters half work.
The live dealer bit is Evolution-run, so you know what you're getting. Proper human dealers, decent stream quality, and Crazy Time and Lightning Roulette is rammed on a Friday. Worth saying the British side is well covered in the evenings. Before you deposit anything it's worth a look at single calculator rather than taking my word for it.
Bonus-wise on Single Bet Calculator is 100% up to ?200 plus 100 free spins. Playthrough sits at 40x nothing special but not predatory. They also ran 20 no deposit spins on verification. Minimum is a tenner, sign-up took me maybe five minutes, KYC took a day.
Cashouts are decent. Card payments take 2-3 days, Skrill hit in a few hours, and Bitcoin clears fastest. Took out about ?250 recently no silly document requests. Support at Single Bet Calculator answered in about four minutes — actually read my message. They're UKGC licensed, which matters more than the bonus size. No standalone app, the browser version does the job.