A game that shows ads every time you finish a round

As soon as I finish Level 1, an ad pops up, then I get a reward. Finish the next level, another ad pops up, then a reward. Even if I choose the reward ad, if I'm unlucky, an ad shows up. When I press restart, there's a chance an ad will appear. It feels like they're trying to push the ad-free purchase, but it's a game I don't really want to buy the ad-free version for. A somewhat disappointing game...