Did you know that every Mac, iPad, Android and Windows devices already comes standard with assistive technologies that help people with disabilities for hearing, vision, learning and literacy, and physical, motor skills? They have designed their products with everyone in mind. Please check these out before you go buying expensive software you do not need. Many times these tools will do the trick.
Both Microsoft and Apple offer inclusive tech support through chat/phone for individuals who have questions about the built-in accessibility options.
Please check out the tools on your computer and let me know what you think.