Tenorshare 4DDiG is primarily a desktop-based data recovery tool rather than a standalone "portable" application (like a single .exe you run from a flash drive). However, you can achieve portable-style functionality using its Bootable Media feature or by using the Tenorshare 4DDiG Free
: Prevents data overwriting on the target drive, which is a critical risk when installing software on a disk that needs recovery. tenorshare 4ddig portable