74,139,804 programs installed

Should I remove Smart Defrag 4?

What percent of users and experts removed it?
27% remove it73% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #803
United States Rank #1,067
Reach 0.9893%
Installation trends (last 30 days)
Uninstallation trends (last 30 days)
Lifespan of installation (until removal)
< 4.04 days
119.07 days >
Average installed length: 62.56 days


4.4 0.42%
4.3 23.16%
4.2 21.88%
4.1 17.97%
4.0 Beta 1.14%
4.0 35.43%

Other programs by IObit

Smart Defrag 4


Smart Defrag 4 is a software program developed by IObit. The most common release is 4.0, with over 98% of all installations currently using this version. During setup, the program registers itself to launch on boot through a Windows Schedule Task in order to automatically start-up. A scheduled task is added to Windows Task Scheduler in order to launch the program at various scheduled times (the schedule varies depending on the version). The primary executable is named smartdefrag.exe. The setup package generally installs about 38 files and is usually about 25.27 MB (26,499,598 bytes). The installed file LiveUpdate.exe is the auto-update component of the program which is designed to check for software updates and notify and apply them when new versions are discovered. Relative to the overall usage of users who have this installed on their PCs, most are running Windows 8 and Windows 7 (SP1). While about 39% of users of Smart Defrag 4 come from the United States, it is also popular in Germany and United Kingdom.

Program detailsProgram details

URL: www.iobit.com
Installation folder: C:\Program Files\IObit\Smart Defrag 4\
Uninstaller: "C:\Program Files\IObit\Smart Defrag 4\unins000.exe"
Estimated size: 25.27 MB

Program filesFiles installed by Smart Defrag 4

Program executable:smartdefrag.exe
Name:Smart Defrag
Smart Defrag v4
Path:C:\Program Files\iobit\smart defrag 4\smartdefrag.exe
Additional files:
  • taskMgr.dll - IObit TaskSchedule Dynamic Link Library
  • taskMgr_IObitDel.dll - Task Scheduler Dynamic Link Library
  • OFCommon.dll - Advanced SystemCare Ultimate (IObit Library)
  • ActionCenterDownloader.exe - Advanced SystemCare 8 (Action Center Downloader)
  • defragsetup-pro.exe - Smart Defrag 4 Pro (Smart Defrag v4)
  • IU5Setup.exe - IObit Uninstaller (IObit Uninstaller Setup)
  • LiveUpdate.exe - Product Updater
  • smart-defrag-setup.exe - Smart Defrag 4
  • AUpdate.exe - IObit AUpdate
  • AutoUpdate.exe - Smart Defrag (Smart Defrag Updater)
  • GameScaner.dll - Game Scaner
  • GameScaner_IObitDel.dll
  • SDInit.exe - Configuring Smart Defrag
  • SDInit.exe.exe
  • SDInstaller.exe - Smart Defrag Installer
  • SmartDefrag_IObitDel.exe
  • upgradetips.exe
  • SDDriverMgr.dll - SDDriverMgr
  • SDFreeBigUpgrade.exe - UpgradeTip (Show new Smart Defrag function)
  • LocalLang.exe
  • NtfsData.dll - NtfsData
  • sdassist.dll
  • sdassist_IObitDel.dll
  • sdcore.dll - sdcore
  • sdcore_IObitDel.dll
  • sdlib.dll - sdlib
  • sdlib_IObitDel.dll
  • SendBugReportNew.exe - Send Bug Report
  • UninstallPromote.exe
  • UninstallPromote_IObitDel.exe
  • unins000.exe - Setup/Uninstall

Program behaviorsBehaviors exhibited

Scheduled Task
  • SmartDefrag.exe is scheduled as a task named 'SmartDefrag4_Defrag' (runs weekly).
2 Scheduled Tasks (Boot/Login)
  • SmartDefrag.exe is automatically launched at startup through a scheduled task named SmartDefrag4_Startup.
  • AutoUpdate.exe is automatically launched at startup through a scheduled task named SmartDefrag4_Update.

How do I remove Smart Defrag 4?

Quickly and completely remove Smart Defrag 4 from your computer by downloading "Should I Remove It?", its 100% FREE and installs in seconds (click the button below).
Or, you can uninstall Smart Defrag 4 from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program Smart Defrag 4, click it, and then do one of the following:
    • Windows Vista/7/8: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove Smart Defrag 4.

Win 8 48%
Win 8.1 0%
Scheduled task? Yes
(Runs on Windows boot)
Uninstall it 27%
Keep it 73%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 8 47.95%
Windows 7 45.10%
Windows Vista 3.84%
Windows XP 3.10%
Windows 8.1 0.01%
Which OS releases does it run on?
Windows 7 Home Premium 23.08%
Windows 10 Home 14.41%
Windows 8.1 13.20%
Windows 7 Ultimate 11.97%
Windows 7 Professional 8.01%
Windows 10 Pro 7.31%

Distribution by countryGeography

38.50% of installs come from the United States
Which countries install it?
  United States 38.50%
  Germany 11.58%
  United Kingdom 7.03%
  Italy 4.25%
  Canada 3.18%
  France 3.07%
  Russia 2.39%
  Brazil 2.11%
  Australia 1.94%
  Sweden 1.55%
  Netherlands 1.47%
  DZ 1.01%
  Belgium 0.98%
  Egypt 0.89%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Hewlett-Packard 26.37%
Acer 19.64%
Dell 16.93%
ASUS 10.59%
Toshiba 6.45%
Lenovo 5.74%
Samsung 4.10%
Medion 2.35%
American Megatrends 1.12%
Intel 0.89%
MSI 0.81%
Common models
ASUS All Series 5.84%
HP Pavilion g6 Notebook P... 4.61%
HP Pavilion 15 Notebook P... 3.76%
HP Pavilion dv6 Notebook ... 3.64%
HP 15 Notebook PC 3.35%
HP Pavilion dv7 Notebook ... 3.09%

About (from IObit)

Founded in 2004 by two creative and enthusiastic programmers, IObit is focused on providing consumers with innovative and comprehensive system utilities and security software for superior PC performance and security.
Publisher URL: www.iobit.com


user comment
No one has commented yet. Help others learn more about this software, share your comments.