So if Avast Pro gets a new update say at 9AM then Avast Free will not get that same update until 11AM? Is that correct?
No.
avast checks if there is an available connection each 40 seconds.
If there isn't, wait more 40 seconds to check. Checking does not take more than one second and, of course, does not use the Internet band.
If there is a connection, check for an update. If there is not any new file to download, wait 4 hours to start checking again. If there is an available update, start it and install it. Again, wait 4 hours to check the next time.
Avast Free AV checks for updates every 4 hours. Avast Pro AV and IS check every 1 hour. The program already knows that the update is there, but it won't tell you until it's your turn. You have to allow the update, i.e., it's not a forced and automatic update. They also use 3rd party servers for updates distribution, combined with their huge network of standalone servers, to distribute the content from geographically close locations.
Also in the chart it says with Avast pro it "Lets you safely browse suspicious websites or applications" What is this feature that is not in Free version?
Script blocker?
