An excellent introduction to phonics.
If you (the parent) are familiar with Phonics, you will immediately appreciate the way the app teaches phonics.
Letter section: introduces the phonetic sound of each letter and builds the foundation.
Words section: teaches the child how to sound out a word to spell it. It presents words from common word families and says out the phonetic sound of each letter when building the word.
Correct answer would make the word rock to fun music.