Backup Disk

Backup Disk is a free utility app that allows users to turn their iPhone or iPad into a portable backup storage device for their Mac computer. The app requires installation on both the Mac and the mobile device, with the Mac app acting as a server and the mobile app connecting to it to sync the selected folders for backup.

Backup Disk provides a convenient and secure way to transfer important files and folders from the Mac to the mobile device over a Wi-Fi or cable connection, allowing users to easily carry their important data with them wherever they go and have a reliable backup option in case of any unforeseen circumstances. The app has some limitations for the free version, which can be removed through in-app purchases.