If we talk market leaders then imo 888 and its not even close. Especially if you want to play on the side with not paying too much attention.
The reason is the clear warning that comes up when its ur turn and when time is running down. So far i did not found any other
App that is pleasing enough in that regard.
Pokerstars does only have sound when time is running down. For unknown reason they decided to delete the option sound on turn a few years back.
GG i have to put the volume super loud to hear the notification and its very uncomfortable to play with very loud card shuffling etc. If they would fix this the app would be better overall than 888.
Wpt is actually ok, clear warning on turn but app still worse than 888 because u can only choose bet sizings in %.
The few things that sucks on the 888 app is that there are no layouts to choose, no custom bet sizings and no option to turn off those silly comic characters.