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CPU-Z vs Speccy: catalog facts
CPU-Z	Speccy
Free Freeware. The site is funded by advertising and donations, and a paid SDK exists for…	Freemium A free version is available. Speccy Professional is a paid licence.
Windows, Android	Windows
Per-module memory SPD data, including timings, which is hard to find anywhere else Live per-core frequency and memory frequency readings	One page answers what hardware is in the machine and how hot it is Snapshots can be saved or shared when asking for help
Closed source freeware; the website is ad-supported and asks you to allow ads Reports hardware facts rather than monitoring temperatures over time	Development has slowed considerably The Professional edition with automatic updates is paid
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	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 20, 2026	Official website Full listing and sources Checked September 22, 2026

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