This IS NOT a partition manager -- it's a 1/2 a trick pony that clones the Windows drive you're using to a 2nd hard disk / SSD. Everything is contained in the program's folder, & it only adds an uninstall key to the registry, so likely no harm in keeping it around if you think you might use it. Whether it'll work or not depends a lot on your hardware.
A typical Windows installation includes a FAT32 boot partition, a 16MB system partition, the Windows partition, & a Recovery partition with a recovery image file [.wim] that includes a version of WinPE, a mini version of Windows that's usually used on bootable USB sticks, e.g., the ones you can create with backup software. Cloning those 4 partitions to another drive is pretty straightforward -- there's not much to go wrong. You're next step is to go into the BIOS settings & set the search order that the BIOS uses looking for the boot files when you start your PC/laptop. So far, so good, but will the PC or laptop actually start or boot? Maybe.
Going from one conventional hard disk to another the answer's almost always yes, the system will boot. Going from a conventional hard disk to an SSD, the odds lean towards no. Same if you enabled UEFI on a PC/laptop where the BIOS was using CSM or legacy booting, &/or if you enabled secure boot. The Windows tool for adding a new set of boot files, BCDBoot, is a straightforward command line app, that does work to add those boot files to a partition of your choosing. Problem is they often will not work. Editing the boot files isn't difficult with EasyBCD, but the results may or may not work -- the same with Windows own tool, BCDEdit, which leans much more towards archaic than straightforward. Migrating from a conventional hard disk to an SSD, if you keep the original hard disk attached, and continue to use the boot partition & files on that hard disk, using EasyBCD to change the Windows target to the SSD *might* work. Doing the same thing to the boot files you cloned to the SSD, the odds are stacked against you. In one case, working with VMs I was able to install Win11 fresh, then clone the Windows partition from the original VHD, and that worked. The paid version of Paragon HDM can create a bootable USB stick with some boot repair utilities, Macrium Reflect USB sticks have their own tools, and there's Windows own boot repair. Paragon's & Macrium's USB stick also have a migration tool. One of those *may* work.
All of which is not to say 4DDiG Partition Manager won't work for you -- I've had exactly 2 cases where moving from a conventional hard disk to an SSD everything worked as planned, compared to 1/2 a dozen failures. So be prepared and good luck if you give this sort of thing a try.