Is there a place to find previous versions of third-party apps? I'm specifically asking because I recently updated the "Flashlight: 2 for 1" app on my 9850. After the update, the app would not work until I granted it several permissions--personal information, location, camera, etc. I don't understand why it needs all these permissions when the previous version operated fine without them. I don't feel comfortable granting these permissions and would like to go back to the previous version.
I would recomend making frequent 3rd party app backups, a link to the best way is in the Upgrade Guide linked in my signature. There is no repository to every app available.