If you want to use text-to-speech to create audiobooks with many other useful features, this is the app to get! At first, I was confused because I bought the license that included the audiobook feature. When I tried it, I was lead to a page that wanted me to upgrade my package. If you have this problem, note that you were given 2 codes. You have to redeem both of them to gain access to the audiobooks function. 5/5 for this application!