An app to help young children understand how letters combine into words. It features one hundred three-letter words, like cat and dog, with pictures that provide some fun when you touch/tap them. You move from one word to another by changing a single letter. For example, cat—bat—bag—big—dig—dog. All the words are linked.
In the iPad version of this app, you get a choice of letters to replace the c of cat with. This is true also on iPhones 5, 6 and 6 Plus or an iPod Touch with a 4–Inch screen.
On an iPhone 4 or an iPod Touch with a 3.5–Inch, the app chooses the replacement letter for you. The game is simpler, but children enjoy it just the same.