Finding a working is a common quest for users trying to recover lost photos, videos, or documents without paying for the Pro version. While the free version of DiskDigger for Android is great for basic photo recovery, the Pro version (and the Windows desktop version) unlocks the ability to recover more file types and upload data via FTP.
If you are looking for a public "list" of license keys, it is important to understand how software licensing works. Diskdigger License Key List