F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
  • it is only 11Mb in size
  • input method to avoid system keyboard key logging

check your data breach https://monitor.firefox.com to learn why you need multiple passwords

check about #lastpass to learn about why you do not share passwords

optionally sync files between devices