From the Ranked Health website: 

RANKED Health is a project run by the Hacking Medicine Institute (HMi), a non-profit organization spun out of MIT’s Hacking Medicine program. This project is designed to review and rank healthcare focused applications, providing independent, unbiased and accurate information to accelerate patient and provider adoption of clinically proven and high-quality digital health solutions. In addition to identifying best-in-class healthcare applications for better health monitoring and disease management, RANKED Health also helps uncover unsafe and ineffective apps on the market.

From the Federal Trade Commission website: 

Does your mobile app collect, create, or share consumer information? Does it diagnose or treat a disease or health condition? Then this tool will help you figure out which – and it may be more than one – federal laws apply. It’s not meant to be legal advice about all of your compliance obligations, but it will give you a snapshot of a few important laws and regulations from three federal agencies.