I generally enjoy puzzle type of games. When reading some of the reviews for this I saw someone mention they lost all their progress and did not want to go through 200 levels again. I kept playing hoping it would get more challenging, but it was ridiculously simple all the way to level 200. I should have quit much sooner. I totally understand why you would not want to go through those levels again.
This is for developers in general. There are people like me that will gladly pay for challenging games without all the ads, coins, bonuses, trophies, awards, etc. etc.
Offer a free trial that has a few sample puzzles at different levels of difficulty and if I like the challenge, I will buy your product.
I do not recommend this game.