How do I activate syncing with my Google Calendar?
Sync your Appointfix calendar with Google Calendar, open the app and go to Menu → Settings → Calendar → Sync with Google Calendar(Android)/Sync with other calendars (iOS).
Enable the Google Calendar sync, and a webpage from Google will appear to ask you to enter your Gmail credentials.
When you sync your calendar with Google, a sub-calendar called Appointfix is created in your primary Google account, and appointments will appear there, not in your primary calendar.
Do not change the name of the Appointfix sub-calendar. Otherwise, the sync will stop working.