I would suggest Unblock me, Where is my Perry, Chess Hd, LetterPress, QuizBoard, It's a Game Jeopardy, A year of Riddles...
You can find other family friendly puzzles on this free ipad games collection and on Top App Charts
SPELLCRAFT Collectible Card Game. Great fun and family friendly. I'd describe it as like chess but with fantasy cards, goblins and dragons type thing. Single player against AI or play each other through game centre.
And I give you my word it's 100% free with no hidden money traps.
Come and say hello on our forum if you need help x