I have used this app and here is my experience,
I earned 28$in just 3 days by giving my phone to my little brother and told him watch videos as much as you can and then I will let you play games all day.
He reached 28$ and said there are no ad videos. Once you reach 27$ or near about there are no video sponsers and you need atleast 40$ to redeem.
After 28$ or near one can earn only 0.1$ per day only, that means atleat 4-5 months will be required to redeem our money.
This app is using fraud business rules. Earning is like impossible on this app.
But this app will definitely not survive because it is cheating. Be aware of this app.