• Get more free disk space with one simple click. *

    With over 3000 international five star ratings and world class support, it's a must have tool for every Mac user.

  • Removes unused language translations from applications.
  • Removes old legacy code from applications.
  • Cleans out old logs.
  • Cleans up caches.
  • Cleans out temporary files.
  • Cleans out the downloads folder.
  • Cleans out the mail downloads folder.
  • Empties the trash.
  • Choose which drive to put on a diet, including external and USB drives.
  • Works on all Macs including MacBook Airs.

    We offer quick and easy support. If you have any issues, please email us and we will usually get back to you within one business day.

    What customers are saying:

    "My favorite of the various "disk cleanup" apps on the App Store"


    "I've never used an app as good as the one you guys have developed"

    Geri Clark

    "Does just what it says. How rare is that?"


    "Keeps getting better..."


    "Very intuitive, and very effective. Buy this app!"

    Stephen Smith

    "Couldn't be easier."


    "Very simple app. Love it."

    Drew Van Stone

    "For the skeptic, this does work"

    Justin Harter

    "I'm a stickler about my mbp, and this app found 4.6g of useless junk, needless to say I'm quite impressed, good job!"

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  • What's New
    [FIXED] Rare hang on some systems when starting Disk Diet.
    [FIXED] Issues with choosing the volume to use.

    Disk Diet (com.tunabellysoftware.diskdiet) is a Mac software application that has been discovered and submitted by users of The latest version that our users have reported running on their systems is Disk Diet 422. The most popular version of this application used by our users is Disk Diet 7.0.

    Operating System: Mac

    Default Install Path: /Applications/Disk

    Minimum OS version: 10.6