A soft voice, heard at full volume: phrases spoken clearly, medication timing on the Prescriptions page and dose logs, and a large-button layout for a tremor. The ALS and Parkinson's mode is live, with one library for both: its phrases cover medicine timing in plain words (it's time for my medicine, my medicine is wearing off, I'm on now, I'm off now), moving (I'm freezing and can't move my feet, I'm going to fall, my hands are shaking), a voice that is too quiet, eating and swallowing, and the person's own decisions. Choose the mode in the guided setup and those phrases open first in the Phrase Library and at the top of the Communicate page.
The condition page on the public site tells the full story and ends with the way to create an account.