One ad plays after every second time you start new game. Our advertising revenue allows us to provide ongoing support and development of the game, while keeping the game free for everyone. There is a Disable Ads add-on available in the store that removes video ads from the game.
If you prefer, that option is there.To disable the ads, please follow the next steps:
1) Open the shop by tapping on the shopping cart icon on the upper part of your screen
2) In the shop, tap on the remove ads option to remove interstitial ads for only 2.99 USD.