Yes. If a user with an account later chooses to use the app without an account, they can do so by following the steps below:
iOS:
• From the Settings Menu tap Settings
• Tap Account Options
• Tap Sign Out
• Review Sign Out screen and confirm by tapping the red Sign Out button.
Android:
• Tap Settings
• Tap Sign Out
• Review Sign out screen and confirm by tapping the red Sign Out button.
A warning screen will appear advising the user about limited app functionality.