You can absolutely access your Calm account across multiple devices, as well as on our website.
Once you create a Calm account on one device, simply make sure you're logged in with the same email address on your additional device(s).
iPhone or Android App: To create an account or log in on our Calm app, tap the 'Profile' button in the bottom right corner of the home screen. Once there, tap the 'Sign up' option to create an account or the 'Login' option to log in to your existing account.
Website: You can sign in to your account on our website, at calm.com/login.