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smartmontools vs DriveDx: catalog facts
smartmontools	DriveDx
Free Free and open source under the GNU GPL version 2.	Paid Paid license with a free trial download.
Windows, macOS, Linux, Command line	macOS
Often gives advance warning of disk degradation before data is lost smartd monitors on a schedule and notifies you, rather than waiting to be asked	Detailed SMART health indicators for SSDs and HDDs Runs drive self-tests
Command-line only; interpreting the attribute values takes some learning Attribute meanings vary by manufacturer and are not always documented	macOS only Paid after the trial
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 24, 2026

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