Essentially, 'Cato’s Hike' is a universal game for the iPhone/iPad/iPod Touch to teach kids and young children basic programming skills. The younger ones will obviously enjoy solving levels using simpler coding techniques but the hope is the older ones will pick up more advanced concepts like loops and branching as well as even more advanced concepts like a basic stack or memory!
Set in the animated world of Foosville, where the character of the Glitch is wreaking havoc, the app offers scenes where players need to help the inhabitants to do something. In one puzzle, kids create a program so the policewoman can reach her favorite doughnut. In another, they must help a construction worker fill a chasm with rubber tires so that he can hop over them to reach his trusted hammer. Kids will play through numerous programming puzzles, set in different locations -- including the town, outer space, and a diner.
This coding app is free for schools and for consumers there is a free Hour of Code experience
Pyonkee is a free app that allows you to use Scratch on an iPad. You can save your work to Dropbox and open it in Scratch 1.4 or 2.0 on a computer. You can also share files using Airdrop. The buttons can be quite tricky to use for more complicated projects though.