There are small businesses in the space. But because every person with a disability is unique, there aren't universal solutions. It's wetware not software. Good luck.
Neither is better than personalized hands on care. For the patient, that is. For those who would rather not pay for it with their money and/or time apps and robots are attractive.
My mind was initially thinking of an AI assistant focused on guiding users through daily tasks (personal hygiene, locking doors, etc).
Advancements in robotics made me wonder if there was something wearable to enhance one's motor skills.