AlphaClash is a real-time word puzzle centered around multi-player gameplay. The premise is simple, letters fall from the top of the screen and come to rest at the bottom, while swiping left or right causes the letter to move in either direction. The object is to form words either left-to-right or top-to-bottom, scoring points by "cashing in" the words by touching them.
The kid-friendly iPad/Landscape mode is an excellent vocabulary-building tool, and the large tiles are easy to manipulate.
AlphaClash integrates with Facebook for easy multi-player discovery. It does not post anything to your feed unless expressly permitted to after a victory.
AlphaClash requires push notifications in order to be challenged by friends. Challenges are the only notifications sent, so you need not worry about ads, nagging, or other intrusions.