Quipee lets you keep up to three accounts on your device and switch between them without logging out.
How to add or switch accounts
To switch accounts or add a new one, go to Settings, tap Account, then tap Switch Account. From there, tap any existing account to switch to it, or tap Add another account to sign in to a different account or register a new one.
To remove an account from your device, go to Settings, tap Account, then tap Switch Account. Swipe the account you want to remove and tap Remove. This only removes the account from your device — your account itself is not deleted, and you can add it back at any time.