Kwiff

Kwiff casino primarily focuses on sports betting in the UK market but has a casino section with slots and table games. Bettors can bet on every major sport in their sports catalogue, including darts, football, rugby, horse racing, cricket, etc. If you get lucky, your bets' odds will be 'KWIFFED' or supercharged resulting in higher payouts. 

The layout of the app offers a smooth experience and is pleasing to the eye. You can enjoy sports wagering using a mobile or a tablet. Notably, it is faster and more efficient on iOS than on Android devices. Customer support is available 24/7, with swift and concise responses through live chat. Besides live chat, you can contact support via email or use the FAQ section to get resolutions to common queries.

The platform is licensed by the best gambling regulator in the industry, UKGC. Therefore, it's a secure gambling platform. In addition, the site is multi-lingual with over ten languages, attracting diverse players. 

Their KYC process is a hassle since you have to deposit first to complete registration. You have to chat and upload documents for verification; otherwise, you'll be frustrated while cashing out. As an expert, I had three issues with them, #1 withdrawals are too slow compared to other sites, #2 the slots are limited and has few providers, and #3 Horse-racing odds are ridiculously low compared to other sportsbook platforms. 

I can conclude that Kwiff is not the best but above average, which is pretty enough. Few improvements like additional payment methods and better bonuses could make it one of the best sites on the web.