Why does Ada need an email address to sign up?

You need an email address and a strong password to keep your account and health information safe. You also have the option to receive offers to participate in health research projects and personalized email communications based on your health profile. Ada is legally required to notify all users - regardless of email subscription status - of certain updates, such as providing invoices for paid features and privacy policy updates. The registered account also allows you to access your data from multiple devices, which is a requirement of data protection laws.

Alternatively to using an email address, you can sign up with third-party authentication tools, such as Apple ID and Facebook.