Can GoZync Sync Calc Fields?
Yes, though you can't sync "into" calc fields. For example, you can have a calculated field in the host that you pull into a regular field on Mobile. Or you can have a calc'ed field in mobile you push up to a regular field in the host.
But if you have calc fields of the same name in both your hosted and mobile tables, you'll see errors when you check your work in GoZyncHosted and you'll get errors that stop your sync: because you can't set values into a calc field, of course.
The key is to have a calc on only one side (either mobile or hosted) and that the field only needs to be on the layout you pull from: so put the calc version on the sync layout--we'll pick it up and send it on it's way. If you put the corresponding non-calc version on ITS sync layout, we'll try and send it on its way, and there will be a calc at the other end causing an error. Remember, the only fields you need on a sync layout are the fields you're sending from that layout.
For more on calcs, setting literal values, and conditionally setting fields, read up on Custom Field Mapping.