Limitations of the free version:

• Cannot add/remove events
• No updates from now on

jCal

The best-looking calendar for Android.
Main features:

• card-based interface: swipe left/right to reveal year view, month view, and agenda view
• integration: uses your already set-up Google Accounts to sync with Google Calendar
• event dialog: quickly open / review / edit / delete and add events
• event dialog: has a date/time selector which is much faster and easier to use than the Android one
• simple graphical design, inspired by paper calendars

Screenshots: