I've been on Single Bet Calculator for about four months now, mostly late at night on the sofa, so take this for what it's worth. Stumbled on it through a mate, not an ad.
The slots side is bigger than I expected — somewhere north of 3,000 games last time I counted. Play'n GO takes up most of the space, so Gates of Olympus and the rest of the greatest hits are all there. Personally I mainly play Yggdrasil stuff out of pure habit. The one thing that irks me — the search function on Single Bet Calculator is a bit rubbish, filters half work.
Live tables are Evolution-run, which is fine by me. Proper human dealers, decent stream quality, and Crazy Time is where I lose most of my money, honestly. Fair to note the UK side is well covered in the evenings. If you want to compare the current terms I'd have a nose over on single bet return calculator since the offers shift about.
Welcome offer on Single Bet Calculator is ?100 matched plus 100 spins on Book of Dead. Rollover is 30x which is about par these days. I also got 20 no deposit spins on verification. Min deposit is ?10, registration was quick, KYC took a day.
Payouts are decent. Visa and Mastercard take 2-3 days, e-wallets hit in a few hours, and Bitcoin clears fastest. Took out about ?250 recently with no drama. The live chat on Single Bet Calculator was on me within five minutes — human, not a bot script. Licence is UKGC, so at least there's a complaints route. There's no app on the Play Store, the browser version does the job.