Alphabet Angel to the Rescue    by Elisabeth Seiter
Price: $2.99 USD. 14170 words. Published by Elderberry Press, Inc.  on December 18, 2010. .
This book is a series of short children’s stories with a different letter of the Alphabet emphasized in each story. Some of the words are challenging and a glossary is at the end of each story with simple definitions. We don’t often give our children enough credit for their ability to learn difficult words. This is a fun way of building their vocabulary.

Vocabulous You! An Interactive Guide to Building Vocabulary for Standardized Tests, College, On the Job and Everyday Life    by Robin Kavanagh
Price: $9.99 USD. 17430 words. Published on December 4, 2011. .
Vocabulous You! is an interactive vocabulary guide designed specifically for e-readers. Your annotation/notes function works with this guide into a customized learning tool that you can use to build your vocabulary in ways that make sense to you. Great for students, people studying for standardized tests, job applicants, and anyone looking to boost their verbal skills.