On a Windows PC, Notezilla syncs every minute.
Watch this short video that perfectly depicts this feature:
Right click on Notezilla icon, choose Sync option and ensure that 'Sync automatically' is enabled.
On phones & tablets too, Notezilla syncs within a minute after any modifications to notes etc. Also, sync is triggered via push notification after any modifications on cloud server. Of course Phones & tablets should be connected to the Internet.
More details over here : www.conceptworld.com/Notezilla/Notezilla.Net