Hands down, the best AAC app for a wide variety of users. It grows with the user- you can easily close out vocabulary words so as to not overwhelm a new user learning how to communicate via AAC, and reveal new words as needed. There is also a “babble” feature to quickly turn on all words and explore. There is a “search” feature, for anyone who might be helping how to model use of the device, to teach you where words are, or if they exist/need to be added. There is a history feature, to see how the device is being used, and many more features I appreciate every day. I purchased this for my own son when he was more impacted by his autism, was verbal, but had selective mutism, but have heard from others who use it for apraxia, as well as for users with cognitive impairment. Because of the small button size it may not be appropriate for a user with significant motor impairment, but users with mild motor impairment have had success using it with a custom layover/grid to go over the iPad, to help guide the fingers to the correct button. I also like that the app was created by a Speech Therapist. Some of the more popular and longer-existing apps seem to be a jumble of words where sometimes you will have to navigate through seven or eight pages to get to the word you want to say! Speak For Yourself has vocabulary arranged so that it shouldn’t take more than 2 taps to get to the page where you want to be. Quicker communication= less frustration.