I also don't think any professional gambler would waste their time here for only entertainment. I also think that this cann't call as gambling it can be called as game
It might not work for everyone especially to those professional gamblers who are playing to earn. This kind of app that doesnt involve money at all is only ideal for players who wants to refrain themselves to gamble but still want to have fun. It cant be as exciting as what people assume it can be (unlike if you're playing using real money) but it can somehow help the gamblers who are having a hard time to control themselves.