The latest major update transitioned the app to an ad-supported model, resulting in a 1.17 star decline in average ratings. While the removal of the upfront purchase barrier is noted, technical regressions in piece movement and obstructive ad placements drive a negative user response. The overall impact is negative due to these critical functional and interface failures.

This update from Apple will improve the functionality of this app. No new features are included.

• New ad model. Play the full game in exchange for ads! Get access to all worlds, all game options, hard AI, and game save. Everything but online play which will be coming soon.
• iOS 10 Compatibility
• Performance enhancements