I consider Osteostrong hazardous with osteoporosis. Your muscles can be capable of lifting weight that will crush your bones.

The interplay between muscle strength and bone is established science. Bones become stronger with increased muscularity.
The physiology of vibration during lifting engaged by osteostrong (sometimes referred to as a biohack) is established as increasing muscle and bone denstiy. (Though there is still quibbling about rate and intensity.)

With osteoporotic bone the violation of normal sequencing (which would be vibration subsequent to impact) risks fracture.
During my only visit the assistant (delightfully) encouraged me to extend my limits and flattered my ability. She also misplaced the leg bar. Then confessed that last week she was working in a warehouse and had only two days of training.