Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Disk Defragmentation Software

UltimateDefrag 6 vs DiskTuna

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score UltimateDefrag 6 #6 in Disk Defragmentation Software 8.2/10 Paid ✓ 3 of 3 features Visit UltimateDefrag
DiskTuna #9 in Disk Defragmentation Software 7.6/10 Free plan Free plan✓ 2 of 3 features Visit DiskTuna

UltimateDefrag 6 leads on 1 check, DiskTuna on 1, and 2 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreUltimateDefrag 6 · 8.2/10
  • Free planonly DiskTuna
  • Most featuresUltimateDefrag 6 · 3 of 3

UltimateDefrag 6 scores higher on our rubric for disk defragmentation software: 8.2 against 7.6 out of 10; our editors rank them #6 and #9.

DiskTuna offers free plan; UltimateDefrag 6 doesn't. On drive types, UltimateDefrag 6 gives you Both where DiskTuna offers Hdd. UltimateDefrag 6 offers automatic optimization; DiskTuna doesn't.

UltimateDefrag 6 is the better fit for strategic FAT32 and NTFS optimization. DiskTuna is the better fit for free FAT, FAT32, and NTFS optimization.

  • UltimateDefrag 6 fits best

    Strategic FAT32 and NTFS optimization

  • DiskTuna fits best

    Free FAT, FAT32, and NTFS optimization

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature UltimateDefrag 6 8.2/10 Visit ↗ DiskTuna 7.6/10 Visit ↗
At a glance
Editor score 8.2 7.6
Ranking #6 in Disk Defragmentation Software #9 in Disk Defragmentation Software
Best for Strategic FAT32 and NTFS optimization Free FAT, FAT32, and NTFS optimization
Pricing model Paid Free
Starting price $29.95 one-time Free
Free plan — ✓ (best)
Free trial — —
Deployment Desktop Desktop
Platforms Windows Windows
Built for Solo, Small business Solo, Small business
Features UltimateDefrag 6 3/3 · DiskTuna 2/3
Scheduled optimization ✓ ✓
Automatic optimization ✓ (best) —
Boot-time optimization ✓ ✓
Specs
Drive types Both Hdd
Filesystem support Multi-filesystem Multi-filesystem
Maximum drive count Not checked yet Not checked yet
Our review
Pros
  • Supports FAT32, NTFS, HDD, SSD, external, and RAID configurations
  • Combines scheduling, automation, boot-time placement, and file-level jobs
  • Includes simulation mode, command-line directory defragmentation, and three-PC licensing
  • Supports FAT, FAT32, and NTFS drives
  • Optimizes boot files, frequently used files, and the MFT
  • Offers jobs, shortcuts, VSS safe mode, and SMART temperature monitoring
Cons
  • Windows-only software with no listed support for other platforms
  • The regular license price is a $29.95 one-time purchase
  • The trial operates only in simulation mode and makes no drive changes
  • Windows-only platform support
  • Scheduled workflows use jobs and Windows Scheduler rather than automatic optimization
  • Its stated scope centers on hard-disk optimization
Our verdict

UltimateDefrag 6 is Windows desktop software for defragmenting and optimizing hard drives and SSDs. It is aimed at users who want more control than a basic drive-maintenance utility, particularly when working with FAT32 or NTFS volumes and…

Read the review →

DiskTuna is a free Windows utility for on-demand disk defragmentation and optimization. It is aimed at people managing FAT, FAT32, or NTFS hard disks who want control over individual optimization tasks, reusable jobs, and scheduled…

Read the review →
  1. UltimateDefrag 6Disk Defragmentation Software 8.2Paid
  2. DiskTunaDisk Defragmentation Software 7.6Free plan

Strengths and trade-offs

  • UltimateDefrag 6 — where it wins

    • Supports FAT32, NTFS, HDD, SSD, external, and RAID configurations
    • Combines scheduling, automation, boot-time placement, and file-level jobs
    • Includes simulation mode, command-line directory defragmentation, and three-PC licensing

    Where it doesn't

    • Windows-only software with no listed support for other platforms
    • The regular license price is a $29.95 one-time purchase
    • The trial operates only in simulation mode and makes no drive changes

  • DiskTuna — where it wins

    • Supports FAT, FAT32, and NTFS drives
    • Optimizes boot files, frequently used files, and the MFT
    • Offers jobs, shortcuts, VSS safe mode, and SMART temperature monitoring

    Where it doesn't

    • Windows-only platform support
    • Scheduled workflows use jobs and Windows Scheduler rather than automatic optimization
    • Its stated scope centers on hard-disk optimization

More comparisons

All disk defragmentation software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update