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HDDScan vs StableBit Scanner: catalog facts
HDDScan	StableBit Scanner
Free Freeware with no paid edition.	Paid Costs $29.95, with a fully functional 30-day free trial.
Windows	Windows
Surface tests in read, verify and erase modes Shows SMART attributes and drive temperature	Continuous background surface scans of all drives Health monitoring with alerts when parameters change
Windows only RAID volumes and USB flash drives get surface tests only	Windows only Paid after the 30-day trial
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Proprietary
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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