Four In A Row (Connect 4)
/Pros
Simple and clean design
Customisable difficulty
Multiplayer (pass & play) mode available
Large gamepieces for easy interactions
Cons
Location of adverts in free version could be problematic
No hints or prompts for inactivity
Menu and settings options text is small
Notes:
No in-app purchase option to remove ads on Android
Menu elements along bottom of screen can potentially disrupt Android user experience if accidentally touched (not seen in iOS version)