I will come back to update

Upon first time opening, I get a pop up asking how much I want to pay for the app. I chose nothing. It then asks me to review the app. I havent used it yet. No clue about it. I really dont like apps that ask me to review their app first thing out of the box. That usually gets 1 star. If the app is good, I will come back and update.

Somps about GREG - A Mathematical Puzzle Game To Train Your Brain Skills