Digital therapeutics (DTx) is emerging in the field of digital healthcare thanks to the development of ICT (information and communications technology), sensors, and AI (artificial intelligence) technology. A clinical trial-based design and manufacturing process is required for DTx before it can be prescribed in the medical field. The risks, and effectiveness and intended use of DTx must then be approved by regulatory authorities. The digital healthcare apps for musculoskeletal disorders, which had previously concentrated on monitoring and feedback on aerobic exercise, have lately begun to be applied to rehabilitative exercises utilizing AI technologies using convolutional neural networks. The development of DTx focusing on therapeutic rehabilitative exercise is expected in the future.