Best Disk Diagnostic Software in 2026
Updated
In short: Hard Disk Sentinel is ranked #1 of 24 as of 4 October 2026, ahead of DiskMaster and smartmontools. The best-ranked option with a free plan is DiskMaster. The lowest first paid tier on this page is HD Tune Pro at $29.95/mo.
When a drive needs checking, diagnostic software can help you review its condition and run a range of tests. Compare SMART tests and bad-sector scans with surface scans and read/write testing to see which checks each tool lists. Bootable media, platform support, and maximum drive size can help determine whether an option fits your maintenance setup and the drives you use. Hard Disk Sentinel, DiskMaster, and smartmontools are among the listed tools, alongside Victoria HDD/SSD and HDAT2. Free-plan availability and paid-from pricing add cost considerations; weigh them with the diagnostic features and drive limits relevant to your needs.
24 disk diagnostic software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Recognised 40% · Phone app 26% · Documented 20% · Free plan 14% of the score
- 1 Hard Disk Sentinel No phone app RecognisedPhone appDocumentedFree plan 8.2Free
- 2 DiskMaster No phone app RecognisedPhone appDocumentedFree plan 8.1Free
- 3 smartmontools No phone app RecognisedPhone appDocumentedFree plan 8.1Free
- 4 Victoria HDD/SSD No phone app RecognisedPhone appDocumentedFree plan 7.8Free Bad-sector scan: YesRead/write testing: YesSurface scan: Yes
- 5 HDAT2 No phone app RecognisedPhone appDocumentedFree plan 7.6Free Bad-sector scan: YesRead/write testing: Yes
- 6 Active@ Hard Disk Monitor No phone app RecognisedPhone appDocumentedFree plan 7.3Free
- 7 Ariolic Disk Scanner No phone app RecognisedPhone appDocumentedFree plan 7.0Free Bad-sector scan: YesRead/write testing: NoSurface scan: Yes
- 8 DRevitalize No phone app RecognisedPhone appDocumentedFree plan 6.7Free Bad-sector scan: YesRead/write testing: YesSurface scan: Yes
- 9 GSmartControl No phone app RecognisedPhone appDocumentedFree plan 6.5
- 10 MHDD No phone app RecognisedPhone appDocumentedFree plan 6.5Free Bad-sector scan: YesRead/write testing: YesSurface scan: Yes
- 11 HD Tune Pro No phone app RecognisedPhone appDocumentedFree plan 6.3$29.95/mo
- 12 StableBit Scanner No phone app RecognisedPhone appDocumentedFree plan 6.2
- 13 HDDScan No phone app RecognisedPhone appDocumentedFree plan 6.1
- 14 Macrorit Disk Scanner No phone app RecognisedPhone appDocumentedFree plan 5.9 Bad-sector scan: YesSurface scan: Yes
- 15 HDD Regenerator No phone app RecognisedPhone appDocumentedFree plan 5.9 Bad-sector scan: YesSurface scan: Yes
- 16 nvm No phone app RecognisedPhone appDocumentedFree plan 5.9Free
- 17 Stellar Drive Monitor No phone app RecognisedPhone appDocumentedFree plan 5.8
- 18 ValiDrive No phone app RecognisedPhone appDocumentedFree plan 5.7 Read/write testing: Yes
- 19 SpinRite No phone app RecognisedPhone appDocumentedFree plan 5.7 Bad-sector scan: YesRead/write testing: YesSurface scan: Yes
- 20 Avidemux No phone app RecognisedPhone appDocumentedFree plan 5.7Free
- 21 DriveDx No phone app RecognisedPhone appDocumentedFree plan 5.6
- 22 Atola Disk Recycler No phone app RecognisedPhone appDocumentedFree plan 5.5 Bad-sector scan: YesRead/write testing: YesSurface scan: Yes
- 23 STB Suite No phone app RecognisedPhone appDocumentedFree plan 5.4 Bad-sector scan: YesRead/write testing: YesSurface scan: Yes
- 24 SMARTHDD No phone app RecognisedPhone appDocumentedFree plan 4.9
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which disk diagnostic software is ranked first on Samsung Mobile US Press?
Hard Disk Sentinel is ranked #1 of 24 with a score of 8.2. DiskMaster is second and smartmontools third.
How many of these have a free plan?
11 of the 24 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, HD Tune Pro has the lowest first paid tier we found: $29.95/mo.
How is this list ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.