All sign-up, sign-in and your account/profile related matters.
Sign-up: Do I have to sign-up for an account to use FitFit?
You'll need to sign up for an account, either with your Facebook account or your email address, in order to use FitFit. If you sign up with email, you'll need to input the verification code sent to your mailbox to complete the registration. Feel free to browse the app with Guest access before signing up - but you'll not have access to start a workout without an account.