Sync2 lives on a PC. Your company does not.
Sync2 has been around for years and does what it says: it links desktop Outlook to Google and, with Sync2 Cloud, to iCloud, Exchange and others. It needs Outlook installed and configured, machine by machine. AddSync Calendar is a service your administrator sets up once.
Where the two really differ
Three things that decide whether it works for a company.
Where it runs
Sync2 syncs desktop Outlook, so it depends on Outlook on each computer. AddSync Calendar connects the systems directly, and people sign in once from an email invite.
Systems
Sync2 Cloud lists Google, iCloud, Exchange, Yahoo, CalDAV and Zoho. AddSync Calendar connects Exchange Server 2016, 2019 and SE, Microsoft 365, Outlook.com, Google, iCloud, HCL Domino, Zoom and CalDAV or WebDAV servers.
Control
One administrator adds and removes people, sets directions and sees the setup in one place, instead of visiting each PC.
Side by side
What each vendor states publicly. Sync2 facts from its knowledge base, October 2026.
Who should pick which
It depends on what you run.
AddSync Calendar fits if you
- want to set it up once for many people.
- do not want to depend on Outlook on every PC.
- run HCL Domino or Exchange Server.
- want one place to see who is connected.
Sync2 fits if you
- are one person with desktop Outlook and Google.
- want the sync to run on your own PC.
- need Outlook folders synced over a network or USB.
- prefer a desktop tool.
Switching is four steps
Connect
Add Exchange, Microsoft 365, Google, iCloud, Domino or a CalDAV server.
Add people
One by one or from a list. They get an email invite and sign in once.
Choose direction
Per source: one way, the other way, or both ways.
Switch the old one off
Check a week of events, then cancel the old tool.
Questions
Does Sync2 need Outlook?
Sync2 is described as syncing desktop Outlook, so yes. Sync2 Cloud also works from desktop Outlook to cloud services.
Is AddSync Calendar a Sync2 replacement?
For companies, yes. For one person with Outlook and Google, Sync2 may be all you need.
Where do the Sync2 facts come from?
From the Sync2 knowledge base on the differences between Sync2 and Sync2 Cloud, checked in October 2026.
Is there a free trial?
Yes, 14 days.
How is AddSync Calendar priced?
Per account. Basic $3, Silver $5, Gold $8 per account a month, billed yearly ($4, $6 and $10 billed monthly). See the pricing page.
Can I choose which way the data flows?
Yes. For each source you choose one way, the other way, or both ways.
Test it on your own calendars.
Start the 14-day trial, or tell us which systems you run and we will tell you what the sync covers, and what it does not.
