Not a great day for free apps, but here are some of the better ones.
Ninjump HD: 6.5/10
A dodge and jump game that plays well, and the power ups are a bonus. The ad at the top is small, and can be removed by switching off Wi-Fi.
Tap Tap Bear Piano: 6/10
Learn to play four classic kids songs or record your own music.
A rotation puzzle game, a little basic, but some nice artwork.
A Glow Fighter: 5.5/10
A basic vertical shooter, plays OK, but seems to slow at times.
Rescue Pine: 5.5/10
A physics puzzle game, remove blocks and try and get the kid to his dad.