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System Mechanic® Ultimate Defense™

Restore your PC’s Maximum Speed, Power and Stability.

Why System Mechanic® Ultimate Defense™?

Boosts internet speeds

Secures your privacy online
Cleans & gets your PC running like new
Fixes over 30,000 different PC problems
Finds and deletes duplicate files
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Experts agree: System Mechanic restores more speed, power, and stability than the competition

“System Mechanic is a quick, simple way to clear unwanted files from your PC and give it a noticeable performance boost.”
Techradar
PC Mag Editors' Choice
“System Mechanic is a slick suite of tune-up tools that can dramatically improve your PC’s performance.”
PC Magazine

Get more value with the ultimate all-in-one PC performance solution

Independent lab tests prove that System Mechanic restores more speed, power and stability than any other comparable product or service.
That’s one reason PC Magazine has given System Mechanic their Editors’ Choice award for best PC optimization software eight times.

Fix PC Problems

Repairs broken internet connections and stops random crashes, restarts, etc.

Speed Up Your PC

Run a comprehensive scan of over 200 critical tests in just a few minutes, using over 30 tools to help speed up your PC.

Ensure Privacy

Employs multi–pass, military-grade wiping to ensure permanent and complete removal of deleted data, like internet history and cache.

Clean Up Your PC

In minutes, cleans up over 50 different types of junk files and regains thousands of megabytes of hard disk space!

Remove Duplicate Files

Manage your storage with ease using personalized scans to identify duplicates and delete unnecessary files.
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Advanced On-Demand Boost™

On-Demand Boost adds immense power to resource-intensive tasks such as gaming, rendering video, and other demanding instances.

Network Scanner adds Bluetooth scanning

If you are experiencing significant slowdown, it may indicate that router ports are open and vulnerable to inviting spoofed DNS and other malicious queries.

Kill More Types of Bloatware

Super Definitions™, an expanded new version of iolo’s innovative program classification system, uncovers and helps manage many more of these culprit apps.

Works with Windows® 11, 10, 8.1, 8, 7. System Mechanic’s ‘Whole Home’ licensing means that the software can be used on all the PCs in your household.

Join the millions who have relied on iolo’s best-in-class PC performance solutions.

★★★★★
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“I have used System Mechanic for years, across many different computers. Great for a quick tune up on the fly and getting rid of all the junk that builds up on your drives.”

Jon F Hertfordshire, U.K.
★★★★★
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“I love you, System Mechanic! Thanks for keeping my PC fresh like new. Been using it for over 8 years.”

David H Littleton, CO
★★★★★
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“This is by far THE best quick fix I’ve found for fixing issues that nothing nor anyone else seemed to be able to even make a proverbial dent into. Mad props to the iolo crew.”

Leif H USA
★★★★★
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“Been using it for many years and even have it on my 10 year old computer!”

Jay O Lajitas, TX
★★★★★
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“I’ve been using System Mechanic for over 20 years. It is the best I’ve found!”

Francis R Thailand
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Speed Up Your Computer, Fast

Find out what’s slowing your computer down and how to fix it in minutes with our free software.
Start Free Scan

BONUS:

includes 15 tools and features
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Performance

ActiveCare

Advanced cleaning and repair removes more unsafe
clutter and fixes more problems than ever before,
going to work whenever your PC is idle.

Internet Cleanup

Delete temporary internet files for better responsiveness

Windows Cleanup

Delete Windows junk files to unleash speed

Memory Mechanic

Free up memory for better performance

NetBooster

Optimize settings to speed up internet connections

Registry Cleanup

Find and repair registry files to improve performance

Security Optimizer

Detect and resolve Windows security issues

Program Accelerator

Detect and resolve Windows security issues

Toolbox

Startup Optimizer

Speed up Windows startup time

Network Scanner

View external devices and connections

File Incinerator

Remove and destroy deleted files

Advanced Uninstaller

Easily remove installed programs

Process Scanner

Find memory-intensive background tasks

Deceptive Programs

Find and remove harmful software

AppPrioritizer

Prioritize speed and efficiency for the apps you use most

What is iolo's Whole Home License?

The Whole Home License® is iolo’s licensing policy that allows you to install and keep your software running on all of your compatible devices within the same home. Previously, users were allowed to install and license their iolo software simultaneously on a maximum of three PCs. Under the Whole Home License, a single activation key allows you to use your iolo software on all of your PCs, other than any PCs you use for business purposes. What you need to know about Whole Home Licensing

  • You, your spouse, and your relatives living within the same household may use the same license on any number of PCs that you own which are not used for business.
  • For full legal terms and conditions, see https://www.iolo.com/company/legal/eula/

To install your iolo product on additional PCs:

  1. On the additional computer, download the latest version of your iolo product. Choose from the list of downloads offered here.
  2. Follow the steps in the installation wizard, and enter the same Activation Key that you used to install on your original computer.

You can view the Activation Key on the original computer from within System Mechanic > red menu bar > key icon > Activation Key.