This application is made for moving WhatsApp's multimedia and backups files stored in the user's main memory to the Sd Card to free up space.
It's done automatically at night or manually by pushing a button.
When it detects new files, it keeps them a few days in their original location, remember that when they move to the Sd Card they will not be available within the WhatsApp, but they can be viewed in the gallery or file explorer.
You decide the types of documents and after how many days they should move.