"We use the information we collect to improve and personalize the Services and to develop new ones. For example, we use the information to troubleshoot and protect against errors; perform data analysis and testing; conduct research and surveys; and develop new features and Services, which may include generative artificial intelligence models."
Fitbit claims broad rights to use all collected user data โ including sensitive health and biometric information โ for research, development of new services, and AI training, going well beyond providing the core service.