The pro is that their games are very legit and real. I have been playing Monopoly Go and Domino Dreams.
Monopoly Go gameplay is lame, all you do is watch the roll dice and some taps collect rewards, not much fun for me. The artwork is great but there is only so much to artwork.
Dominio Dream is quite addictive and playable, I enjoyed it a lot.
Also good that you don't have to create accounts on the payout app or the games.
The con is that the payout is minimal. Rewards are provided when you level up; it takes a lot of game time. The initial levels are easy to hit until after around the payout of SGD 2.