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PassMark DiskCheckup vs StableBit Scanner: catalog facts
PassMark DiskCheckup	StableBit Scanner
Free Free to download and use.	Paid Costs $29.95, with a fully functional 30-day free trial.
Windows	Windows
Shows SMART values alongside their thresholds Predicts when an attribute may cross its threshold	Continuous background surface scans of all drives Health monitoring with alerts when parameters change
Windows only Closed source	Windows only Paid after the 30-day trial
Downloadable app	Downloadable app
Closed source	Closed source
License: Proprietary	License: Proprietary
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.