oneSafe password management app is now available for Windows Phone devices. It allows you to store all your confidential information in one place with with a intuitive user interface. It supports Credit card numbers, Bank accounts, Usernames ,passwords and more.
oneSafe allows you to: 
• Easily create, view and edit items and keep them well organized
• Take advantage of ready-made templates to enter details quickly
• Easily copy and paste complex usernames and passwords
• Mark any item as a favorite for quick access
• Perform rapid searches with a simple to use but powerful search capability
Features:
• The highest level of encryption available; AES 256 to give watertight protection from any possible cyber attack
• Email backup function to safeguard your information
• Multiple authentication methods to choose from
• Ready-made categories to better organize your information
• In-built password generator to create strong passwords.
Download it here from Windows Phone Store for free.