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System Mechanic vs Tweaking.com Windows Repair: catalog facts
System Mechanic	Tweaking.com Windows Repair
Paid Paid license, listed at $54.95 and often discounted.	Freemium Free version available; a premium plan unlocks advanced repairs.
Windows	Windows
Combines junk cleanup, startup management and privacy wiping Automated maintenance through ActiveCare	Scans and lists Windows problems before fixing them Backs up registry and permissions and creates restore points
Windows only Closed source and paid	Windows only Advanced repairs require the premium plan
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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