The Files app that Apple ships with iOS and iPadOS makes it incredibly easy to connect to NAS drives on iPhone or iPad.

Cx File Explorer As well as allowing you to connect to remote machines on your LAN, the app also includes integration with cloud services , such as Dropbox, Google Drive, OneDrive, and Box.

With Cx File Explorer, you can also move files from your Android storage to your Windows folder. It's important to note that you do need to keep your PC powered on and online to access them.