I have used PortableApps for many, many, years. Just on my desktop in recent years. I used to keep a flash drive and a desktop installed PortableApps platforms in sync with each other. I do not see how to do that anymore. So far, I do not see syncing mentioned on the site - except a couple minor irrelevant references.
Years ago: I would work on one or the other, plug my flash drive into my PC, and they would sync.
Can PortableApps apps on separate devices be synced?
I need a flash drive version of my desktop installed PortableApps to be in sync - in app files and changes.