Both my niece and nephew love doodle jump, and its free! It's rated 4+.
Here are some apps my 4.5 year old boy and 7 year old girl enjoy:
- Tic-Tac-Touch
- Highlights My First Hidden Pictures
- My Underwear (based off of the Todd Parr books... hilarious)
- Stack the States (my 7 y.o. plays with this more; a bit much for my boy)
- Memory Cards Lite (similar to the "Memory" card game)
- Easy Bake Cupcakes (make your own cupcakes ... my kids love!)
- Milkshakes! (ditto except you make your own milkshakes)
- Abby Monsters Maker
I don't remember the exact cost of these, but I would bet most are $0.99 or $1.99. I don't like to spend a lot on apps for my kids because I figure their tastes will change.
I hope those ideas help or at least get you going!
You're never too young for Angry Birds!
I would think Stack the States is a bit much for five, but my seven-yr-old can do it with help. Try the free version.
Icee maker might be good, or any of those food-making apps.
Fruit ninja free version
Sky burger
Farm story
Talking Tom (you might regret that one)
Flow paper for the creative types.