There are 44 sounds in the English language. Half of English sounds are written with more than one letter and alphabet books just ignore them. Can you imagine being a kid, trying to learn a language but only being taught half the sounds?
We include sounds like sh and ch, voiced th and unvoiced th, and vowel sounds like the oo in book and the oo in boom.
Many parents asked us what they could do to support their kids who were still too young for our learn-to-read software. Our "Alphabet Sounds" book is our answer and it's available for free.