are three main reasons:
Firstly, it is more powerful than most. We know that you are
trying to recover important data, and that every single piece that you
retrieve could be vital. With Zero Assumption Recovery, nothing is
assumed - ZAR never relies on anything located on the damaged disk. If
incoherencies are discovered, thorough checks and cross-checks are used
to derive the necessary information. The algorithms are built to
withstand a severe pounding, which means that ZAR can recover data even
when things seem hopeless.
Secondly, even its demo version recovers digital images from memory cards.
This means that it is enough to have a demo version of ZAR at hand to recover
lost (deleted) digital images from your digital camera.
Thridly, it takes its time. When you are trying to recover
critical data, you need to be persistent and painstakingly thorough. ZAR
slowly and methodically crawls through your disk, checking and
cross-checking everything and recovering as much data as possible.
Faster programs may skip though your disk in seconds and come out
empty-handed. ZAR persists, and succeeds.