If you read financial news and occaisionally come across a word you dont understand...this is a useful app to learn on the go. This company seems to also sell courses so some of the terms are actually short descriptions of the courses. You can go to the website directly from the app to find out more and I guess buy courses. Thats probably why its free because other financial glossaries charge up to $10. Cant beat the price. nice feature that you can add your own notes to the definitions and you can e-mail the company and give them ideas for new terms.