Encryptr

The free, secure password manager

Screenshots

Hunter's comment

Generate and store secure passwords. Everything is accessible only to you on our No Knowledge cloud, whether you're on your phone or at your desk. It's totally free!
Source

Encryptr as name define itself that this application can generate strong password and encrypt your password which are accessible from anywhere.
Encryptr is most secure application because for sign up you don't need to give any email so nobody can access your passwords. It depends upon passphrase you set for unlock.

Links:

https://play.google.com/store/apps/details?id=org.devgeeks.encryptr&hl=en%20target=

https://itunes.apple.com/us/app/encryptr/id1066041348?mt=8%20target=

Link

https://spideroak.com/encryptr/