I haven’t had a chance to test out this app fully, but I wanted to bring it to your attention while it is still free. This app is normally $1.99. This is based on Karel educational programming language created in 1981 by Richard Pattis, a Stanford University professor. His vision was to create gentle and fun introduction to programming for beginners and children.
This is a game based app that focuses on helping children learn logic and problem solving skills while being engaged in an easy and fun game format. This is quite similar to the approach of the Light-Bot app, The Hour of Code version is always free and can be found here: Light-bot Hour of Code on the App Store on iTunes.
Recommended for children 7 and up. It can be used with younger children who may need some parental assistance.
P.S. If you try out Light-Bot and your child enjoys that app, try out Light-Bot for younger children which offers more lower challenge puzzles to a(ages 4 to 8) here: Lightbot Jr 4+ Coding Puzzles on the App Store on iTunes. You can also purchase this Light-Bot app for older children that have mastered the Hour of Code version. Lightbot – Programming Puzzles on the App Store on iTunes.