I have searched the forum and I cant find the solution so here it goes.

I have accidentally reinstalled installer v3 and now I cant see previously installed apps.
I have by accident, while showing to a friend clicked the "Install AppSnapp" on the jailbreakme.com site which reinstalled my installer.
Now I cant see any of my previous installed apps in the uninstall section though I can install them over again (which I didnt try since its probably not recommended).
The apps are still there naturally and I can access them ofcourse but its really inconvenient that they are not synced with the installer for updates for example.
How can I fix this?
Is deleting the app with WinSCP from the /Applications will work or those apps' files scattered all over the OS?