iSysCleaner Pro removes temporary data

Martin Brinkmann
Jul 1, 2008
Updated • Jun 29, 2010
Software, Windows

Every new application that enters the "temporary data cleaner" category has to stand its ground against established programs like CCleaner which seems to be the application of choice for most cleaning enthusiasts but did receive some bad press lately with the inclusion of the Yahoo Toolbar in the application's setup routine.

The software iSysCleaner Pro is a new contender and although it is called Pro it is completely free to download and use. It comes with the usual ability to clean temporary data from various applications and the operating system with a concentration on Windows, other Microsoft applications like Microsoft Outlook or Microsoft Office and Internet applications like Firefox and Flock.

A comparison of the default scans had the result that iSysCleaner Pro found roughly 120 Megabytes of additional data that could be removed than CCleaner did. The main difference seems to be that iSysCleaner Pro is cleaning installation files while CCleaner does not. The installers for Quicktime and iTunes for instance that are stored in the iTunes directory would be cleaned by iSysCleaner Pro which attributes to about 55 Megabytes of data.

Both applications provide the option to clean the prefetch folder shows that myths are hard to come by. Cleaning that folder degrades system performance for a while until Windows creates the prefetch files anew. The software is constantly being updated and an alternative to CCleaner.


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  1. Martin said on July 2, 2008 at 8:48 am

    William it’s optional to install the Yahoo Toolbar but the thing is checked by default. It is still included in the setup routine ;)

  2. William said on July 2, 2008 at 7:02 am

    “…with the inclusion of the Yahoo Toolbar in the application’s setup routine”.

    That should read, “…optional inclusion…”.

    Or at least it was when I installed it.

  3. Dan said on July 2, 2008 at 4:27 am


    Here is the log entry from AntiVir:

    Virus or unwanted program ‘TR/Crypt.CFI.Gen [trojan]’
    detected in file ‘C:\Program Files\iSysCleaner Pro\is-VO3J3.tmp.
    Action performed: Deny access


  4. answer said on July 1, 2008 at 9:24 pm

    this program is nice, but some cookies i would like to keep and it only has the option of deleting all of them and not leaving certain ones like ccleaner. it did find some stuff but i rather not have 2 cleaning programs.

  5. SickPuppy said on July 1, 2008 at 8:59 pm

    What’s the fuzz about the yahoo crap in crap cleaner as long there is slim build without it:

  6. David Bradley said on July 1, 2008 at 5:22 pm

    Yeah, it was very sneaky of Crap Cleaner to muck in with Yahoo toolbar, I’m definitely switching to iSys…especially as you say it finds more crap to clean anyway.

  7. Martin said on July 1, 2008 at 2:56 pm

    especially if your consider that Virus Total did not find anything

  8. Martin said on July 1, 2008 at 2:54 pm

    probably a false positive.

  9. Dan said on July 1, 2008 at 2:24 pm

    AntiVir caught a trojan on installing iSysCleanerPro (latest version downloaded through the link provided here). Didn’t bother to write down which one… just aborted the installation.


  10. Thomas Murphy said on July 1, 2008 at 12:06 pm

    Thanks Martin. I’ll try it.

  11. Martin said on July 1, 2008 at 10:16 am

    Thomas if you mean cookies for websites yes it can do that. You have to uncheck that cookies are cleaned in the program’s options.

  12. Thomas Murphy said on July 1, 2008 at 10:12 am

    Can I use iSysCleaner without cleaning the passwords from my system?

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