Not sure if this has already been raised/asked, I was not able to find anything related.
It would be useful to also allow users to manually specify the app folder locations for each app (rather than just the "Portable Apps" folder location). Not all Portable Apps are located in the same parent folder, and users should still be allowed to over-ride the default "Portable Apps" folder location as required.
Also would assist in recognising/matching simple exe apps this way (like this app), to detect/update accordingly.