If you are using Google Calendar, you can follow the steps outlined in this video to able to sync it: https://www.youtube.com/watch?v=gzGubOy8GuE. Please note though that this feature is only available to users with premium membership.
Thanks. I have installed the software on my Note 3 and i would like to add from web or from mobile and sync it with the android calendar
Were you able to see the video that I linked? That shows you the steps to do it but as I mentioned earlier, only users with a premium account can use this feature.
Well, even I was able to see that Amer is premium...-_-
Anyway, maybe he refference to problem with iCal sync - it's not good services for google sync. Syncs happen random - create task with specific date, time and it appears in my google calendar (both pc/android) the day after.