Black Friday in JulyEnds Sunday. Limited quantities. No rainchecks.Shop now

Skip to content
Main Content

Customer Ratings & Reviews

Your price for this item is $11.99
Clearance
Save $48
The comparable value price is $59.99

Customer reviews

Rating 3.5 out of 5 stars with 41 reviews

Rating Filter

Pros mentioned filter

Cons mentioned filter

63%
would recommend
to a friend

Customers are saying

Customers express satisfaction with the smooth installation and setup process of System Mechanic Ultimate Defense. They also appreciate the antivirus feature and its flawless updates.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 2 Showing 21-40 of 41 reviews
  • Rated 2 out of 5 stars

    Not helpful

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Item did not fix my problem. I’m very disappointed.

    No, I would not recommend this to a friend
  • Rated 5 out of 5 stars

    system mechanic great product

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    heard good things, system mechanic, I give at as gift to friend, he has hear of it. I plan to use it myself.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great product.

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great product. Helps keep one's computer running well. Easy to install and use.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    great

    |
    |
    Posted . Owned for 5 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I really enjoy this product will recommend to a friend

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Good

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This protection software hasnt done me wrong yet. So i like

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    Slow down pc

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It made pc run much slower. It was suppose make it faster but it didnt. Buyer beware

    No, I would not recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 4 out of 5 stars

    EASY TO USE

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I would recommend this to beginners because its super easy to install. Also it has an amazing scanning options,

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Great job...

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    System mechanic professional is a great tool to clean up and optimize computer. I used system mechanic to fix registry errors and improve browisng performance.

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    Utter garbage. Corrupts files and computer

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Don't...just don't. Has corrupted my files, won't uninstall and let's not even talk about tech support. Interferes with pages loading, locks up computer and all sorts of problems that started once installed. Years ago this was a good product but now you just can't get rid of it. Waiting for tech support to help me get this piece of crap off my computer.

    No, I would not recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Like this program.

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I liked that this system mechanic pro helped me stay ahead of many things. And when we something goes wrong, it comes with so many tools to fix the issues. My laptop works much better than before and it has been kept virus-free since I have been using thisprogram.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    I would recommend it..

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My pc had been working slowly. But system mechanic ultimate defense has done its job greatly. It had an amazingly positive effect on my computer and got it back working efficiently. I would recommend it

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    The results are pretty amazing....

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Iolo system mechanic is a great tool to have on your computer. It has some amazing and useful features that helped me boost my computer's performance. The results are pretty amazing.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Highly recommended..

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have been a customer for over an year and I just love how easily they solve all issues. They clean up my computer entirely and fix it in no time and also help me in installing new programs.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Malware detection

    Rated 5 out of 5 stars

    Great Product!!!

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This System Mechanic suite of products provides everything you could want for antivirus protection. I have been using it for less than a week, but so far everything is intuitive and seems to be effective for my cell phone and multiple computers. The software was a breeze to install and everything made sense right out of the box. Overall a very good product.

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    Major Tech Flaws and Company Wont Stand Behind It

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The product on its own is good. It does what it claims to do. It worked fine from June through last week. Last week it began corrupting zip files as they would download so that NO Zip program would recognize them as functional archives. Uninstalling the program fixed everything. Reinstalling the program brought the issue back. I contacted customer service. VERY shady chat experience and they asked to tap into my system. I gave them access (ugh!) and THEN they said it'd be 4-6 hours before they could get in and do it. So I left it on OVERNIGHT. Today, nothing. Today they say it can take 12-24 hours. I asked for a refund. I can't spend more time on this. Refused because they only guarantee for 30 days. So now I have a program I can't use because if i can't unzip files, that creates a pretty useless system, but I also can't get a refund because the company refuses. Then they told me to CALL so I could speak to a tech. I said, just put them in my system...why do I need to speak with them on the phone suddenly...wouldn't do it. Finally I gave up. The program works and then it doesn't...and when it doesn't...it doesn't BIGLY. And the company refuses to stand by their work.

    No, I would not recommend this to a friend
  • Rated 3 out of 5 stars

    Long time user

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I first bought this a disk in about 2006. It was pretty cool, cleaning up space back when it was a big deal. Also, it let you run the disc on any computer without installing it, or you could register the installation on ten computers. Ownership changed hands and computers have changed, too. I have been getting the latest version because the prompt is cheap. Right now I am looking at an "upgrade," which it is not (but it will get me another year) for $14.95. I have had good and bad experiences with tech support. The last time wasn't good and I had to figure it out myself. If you have it, it is hard to pass up the renewal and the fact that you can put it on multiple computers. I think I have loaded it onto six so far, because you replace them that often. When that runs out I won't get it anymore.

    No, I would not recommend this to a friend
  • Pros mentioned:
    Malware detection

    Rated 2 out of 5 stars

    Deceptive Product Features

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I bought the digital version which iolo calls basic. They claim that there are 3 versions. I only see 2 on Best Buy. I ran the "basic" version and it cleaned up the junk on my computer. I saw the malware option on the dashboard, so I ran it. Several hours and 1.7 million files later, it found 11 malware programs. So I hit the option button to get rid of them. Button refused to pull down. I went to iolo website and chatted with sales there and told me that I had to buy the Ultimate version to fix that! I asked why put that in a program that can't fix it. That was put that in there to tease you to buy the more expensive version. Sorry, not hooking me with that ploy. I will figure out how to remove the malware on my own.

    No, I would not recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Worth my money!

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have downloaded Iolo technologies - System Mechanic Ultimate Defense. It was easy to install and set up. Once that was completed, I ran the cleanup wizard to get rid of unwanted files and unnecessary registry clutter. It also helped optimized the speed of my system. This suite is very comprehensive - it took care of all the issues my laptop has. I no longer worry about invasions or viruses now that I have this software in place. Overall I am very satisfied.

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    Try to sell you expensive tech support

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I had been warned before buying this product that they will try to sell you expensive tech support. I declined that, but a month after installing it I got an email that my tech support was being renewed at $20+ per month. I had two days to cancel it. Luckily I responded and cancelled, but it was clear the person I was talking to was a sales agent. He tried to talk me out of it, offered a free month of tech support, and finally cancelled it. I won't renew this product once the paid subscription is done.

    No, I would not recommend this to a friend
  • Rated 5 out of 5 stars

    Amazing Product

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    iolo system mechanic ultimate defense is the one stop solution for your pc. Installation and set up process is very smooth and the software itself is very much convenient to use. Besides an antivirus, it has also helped me to increase my pc speed. Overall, it is a comprehensive solution for speed and security of your pc. I really enjoyed the product.

    I would recommend this to a friend
Sponsored