• Navigation
  • open search
Close

PLATFORMS

POPULAR LINKS

CATEGORIES

HELP & SETTINGS

Smart Defrag

Download Editors' Rating:
4.5
Outstanding
Average User Rating:
4.2
out of 2993 votes

Quick Specs

  • Version:
    4.2.1.817
  • Total Downloads:
    20,710,884
  • Date Added:
    Aug. 21, 2015
  • Price:
    Free
  • File Size:
    7.38MB
  • Downloads Last Week:
    47,260
  • Platform:
    Windows
  • Product ranking:

Editors' Review

+

IObit Smart Defrag 4 optimizes your PC to take full advantage of SSD performance while defragmenting your hard disks. Its SSD Trim tool automatically enables system tweaks that typically require experience to apply. Smart Defrag 4's updates include a new defrag engine, specialized Game Defrag, a cool new look, and many more language options (35 and counting).

Pros

Smarter: A new and smarter defrag engine recovers more free space on traditional hard disks but skips solid-state drives (SSDs), which should never be defragmented. The Smart Optimize tool analyzes your system and combines Defrag, Optimize, and Prioritize processes based on speed.

SSD Trim: Smart Defrag 4's Trim tool applies the important TRIM command that helps keep your SSD clean and fast. The Trim tool even has its own disk map.

Accessible disk map: Smart Defrag 4's Settings thoughtfully include an accessible disk map optimized for color-challenged viewers.

Boot Time Defrag: Smart Defrag 4 can quickly defrag drives at boot, and you can easily skip the process and get right to work if you need to. No worries; Boot Time Defrag won't defrag your SSD boot drive.

Cons

SSD DIY: Real power users may still prefer their own SSD tweaks to Smart Defrag 4's Trim tool.

Bottom Line

IObit Smart Defrag 4 is the best defragger we've tried yet.

 
read more +

Publisher's Description

+
 
read more +
User Reviews
+
  • Current Version

    4.8

    out of 4 votes

    • 5 star 3
    • 4 star 1
    • 3 star 0
    • 2 star 0
    • 1 star 0
  • All Versions

    4.2

    out of 2993 votes

    • 5 star 1503
    • 4 star 1106
    • 3 star 158
    • 2 star 71
    • 1 star 155
  • My rating

    0 stars

    Write review

Results 1–10 of 2989

5 stars

"Superior Product, Outstanding Customer Support"

September 01, 2015  |  By ROAMIII

 |  Version: Smart Defrag 4.2.1.817

Pros

Product Review;
Smart Defrag 4.2:
I have been using Smart Defrag for 2+ years now, and have found it to be a superior product for keeping all my connected drives in tip top working order.
I have a powerful system and keeping my HHD drives defragmented and my SSD start-up drive trimmed is a great benefit to maintaining my system functioning in top speed and condition.
I also use Advanced System Care pro to protect my computer.
I am extremely pleased with iobit products and the fine technical support this company has to offer its patrons.
Sincerely, R.O. Marshall III

Cons

I have no negative input after 2 years of service from this product

Reply to this review

Was this review helpful? (0)   (0)  

4 stars

"Smart Defrag Pro is OUTSTANDING"

September 01, 2015  |  By MasterSassy

 |  Version: Smart Defrag 4.2.1.817

Pros

The best defrag program I have ever used - as well as all other IOBIT programs

Cons

I have yet to find any CONS with this or any other IOBIT program - very well thought out.

Summary

As with ALL IOBIT programs Smart Defrag is at the top of my list. Easy to use and NOW with the ability to defrag (TRIM) My SSD without having to change settings back and forth to SSD HDD it is so much easier to use.

Reply to this review

Was this review helpful? (0)   (0)  

5 stars

"Great Product! A customer for over a decade"

August 23, 2015  |  By davidlovesr

 |  Version: Smart Defrag 4.2.1.817

Pros

Very smart interface. I have been a Windows Tech W10 and it worked seamlessly.
With SSD it have a 'TRIM' setting that minimizes damage.

Cons

None that I have fouind

Summary

Perfect computer maintenance product. Extensive product line all good

Reply to this review

Was this review helpful? (0)   (0)  

5 stars

"Really useful"

August 21, 2015  |  By LeoBer83

 |  Version: Smart Defrag 4.2.1.817

Pros

Really useful thing

Cons

nothing serious

Reply to this review

Was this review helpful? (0)   (0)  

5 stars

"By far the best Defrag program I've had"

August 19, 2015

 |  Version: Smart Defrag 4.2.0.815

Pros

Fast and efficient

Cons

None that I can see

Summary

Excellant program

Reply to this review

Was this review helpful? (0)   (0)  

5 stars

"Best defrag I have used to date"

July 30, 2015  |  By manicmdc

 |  Version: Smart Defrag 4.1.0.741

Pros

Can defrag my drives in a hurry, and keep them clean with minimum impact on me. Got rid of the Windows Defrag and replaced it with this. Never regretted it a bit.

Cons

None so far.

Summary

Try it and see for yourself. Works great.

Reply to this review

Was this review helpful? (0)   (0)  

5 stars

"excellent and easy to use"

July 30, 2015  |  By Tony Faison

 |  Version: Smart Defrag 4.1.0.741

Pros

It thoroughly defrags your files so that your pc runs smoother. its boot time defrag works even better. I highly recommend downloading this. you won't be disapointed

Cons

none i can find

Reply to this review

Was this review helpful? (0)   (0)  

5 stars

"I've used Diskeeper for 10yrs Smart beets it hands down"

July 24, 2015  |  By locoingamanure

 |  Version: Smart Defrag 4.1.0.741

Pros

Fast efficient easy to use and understand

Cons

none I've found yet

Reply to this review

Was this review helpful? (0)   (0)  

5 stars

"Five Stars"

July 24, 2015  |  By yogibaehr

 |  Version: Smart Defrag 4.1.0.741

Pros

I've found Smart Defrag to be a reliable and useful companion to Advanced System Care, and have been using both for a number of years. It seems quite easy to use and never seems to cause problems.

Cons

I can't really pin down any reasons to find fault. It has always done exactly what I wished to have done, and quite rapidly.

Summary

I feel quite comfortable recommending Smart Defrag and Advanced System Care. It is user-friendly and effective.

Reply to this review

Was this review helpful? (0)   (0)  

5 stars

"Don't use Windows Defrag. Use Smart Defrag for a better"

July 23, 2015  |  By grandadof2

 |  Version: Smart Defrag 4.1.0.741

Pros

Does a more efficient job of optomizing files and defragging the drive.

Cons

None at all that I can find.

Summary

This software does a much better and more efficient job of deffraging your drive.
Well worth the money.

Reply to this review

Was this review helpful? (0)   (0)  

Results 1–10 of 2989

Add Your Review

Login or create an account to post a review.

You are logged in as . Please submit your review for Smart Defrag
Add Your Review

The posting of advertisements, profanity, or personal attacks is prohibited.
Click here to review our site terms of use.

Update Your Review

Since you've already submitted a review for this product, this submission will be added as an update to your original review.
Submit

The posting of advertisements, profanity, or personal attacks is prohibited.
Click here to review our site terms of use.

 
see all reviews +

Full Specifications

+
What's new in version 4.2.1.817
This release is fixing an autoupdate bug.
General
Publisher IObit
Publisher web site http://www.iobit.com
Release Date August 21, 2015
Date Added August 21, 2015
Version 4.2.1.817
Category
Category Utilities & Operating Systems
Subcategory System Utilities
Operating Systems
Operating Systems Windows 2000/XP/Vista/7/8
Additional Requirements None
Download Information
File Size 7.38MB
File Name smart-defrag-setup.exe
Popularity
Total Downloads 20,710,884
Downloads Last Week 47,260
Pricing
License Model Free
Limitations Not available
Price Free

Previous Versions:

Add to my list Report a problem
 
read more +

More Products to Consider

Close[x]

Submit a problem report for Smart Defrag

Please describe the problem you have with this software. This information will be sent to our editors for review.

Problem:

The Download.com Installer isn't working as expected

The download link does not work

The software has a newer version

The product contains malicious software

Other

Description:

Please select a feedback type.

Please enter a description.

Submit Problem Report

Close[x]

Problem Report submitted

Thank you for submitting a problem report! The Download team is committed to providing you with accurate software information.

OK