Google Calendar - Spend less time managing your day & more time enjoying it
F-Stop Media Gallery - Image and video organizer.
Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
Camera Roll - Simple Gallery App for Android, with lovely Material Design.
Calendar Lock PEA - Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM. Platform-independent, Open Source, no installation or registration required.
Google Photos - All your photos are backed up safely, organized and labeled automatically, so you can find them fast, and share them how you like.