If not, what do I have to do to get the wifi synch feature? I have an iPhone and iPad. The apps for those devices is free correct? Or do I need to purchase 1Password for each device?
Given the version you're querying about I've moved your thread to our 1Password 3 forum.
Wi-Fi Sync does exist in 1Password 3 but Wi-Fi sync did change when we released 1Password 4 for both Mac and iOS. The result is you can Wi-Fi Sync between 1Password 3 for Mac and iOS only or Wi-Fi Sync between 1Password 4/5 for Mac and iOS. Unfortunately you can't mix between 1Password 3 and newer versions.
You can download 1Password 5 for iOS for free via iTunes or the iOS App Store. Now the in-app purchase for the Pro features only has to be done once and it will cover you for all iOS devices using that Apple ID, a little bit like how any Mac App Store (MAS) purchase can be downloaded on all the Macs you own.
Does that help?
So if I understand you correctly. I need to load 1Password 5 on all my devices. It was easy to do that on my iphone and ipad. But I tried to upgrade m 1Password on my MAC. Looks like I need to buy new version and it is not free. Am I not doing it correctly?
If you're an existing 1Password 3 for Mac customer that purchased prior to 2013 then yes, you would need to repurchase 1Password for Mac. 1Password 4 was a complete rewrite, a start from scratch so the decision was made at the time to make it a paid upgrade.
In situations like this there are four options.
If you have any follow up questions do please ask.