ALS patients often suffer from widespread pain, but families often lack the knowledge and tools for proper muscle care at home. Flex provides a user-friendly handheld ultrasound device and an app to help. The device shows ultrasound images of the patient's muscles and offers muscle diagnoses and physiotherapy advice. The app lets users connect the device, access muscle data, and find professional physiotherapy guidance. It can also connect to other ALS-related devices for easier patient monitoring.