Auslogics Disk Defrag Pro 11.0.0.2 / Ultimate 4.12.0.4 «Top-Rated · 2025»

“Occasionally on program boot, I could hear the read/write head on my hard drive chattering—not a sound you want to hear... frequent enough to be disconcerting.” PCWorld · 12 years ago

In 2019, Auslogics updated its lineup so that older keys could be used on the Ultimate version, but keys for the new Pro edition are not interchangeable with Ultimate . Pro Edition (v11.x) Ultimate Edition (v4.x) Target User Home / Power User IT Pros / Businesses Algorithms Advanced standard 4 Intelligent Algorithms Boot-time Defrag Reporting Detailed stats Professional reports/Wizard

Both versions are known for their high-speed "proprietary defragmentation technology," which can often process a standard hard drive in under 10 minutes.

Long-term users and IT professionals generally find the software effective for maintaining legacy systems and high-capacity HDDs.

For those managing or specific high-performance workstations, Auslogics Disk Defrag Ultimate provides the most granular control over data placement. Standard users seeking a boost in startup times may find Auslogics Disk Defrag Pro sufficient for regular maintenance.

“It’s worth installing the free version first to see how you'll get on with it. It's a very small installation, but it has plenty of features... definitely worth the money if you're trying to get as much performance as possible.” myReviewer.com Performance & Concerns