Mac App Store

Mac App Store

Mac App Store is the simplest way to find and download apps for your Mac.

To download Disk Diet from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.

Disk Diet

By Tunabelly Software

Open the Mac App Store to buy and download apps.


Thank you for making Disk Diet the #1 disk cleaning app in so many countries. The 80% off sale continues!

Get more free space for your SSD or any drive with one simple click.

With 4500+ international five star ratings and world class support, it's a must have tool for every Mac user.

• Removes unused language translations from applications.
• Cleans up caches.
• Cleans out temporary files.
• Cleans out the downloads folder.
• Cleans out the mail downloads folder.
• Cleans out old logs.
• Cleans out old developer folders with optional in-app purchase.
• Empties the iPhoto trash.
• Empties the trash.
• Choose which drive to put on a diet, including external and USB drives.

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" - michaeltag

"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?" - thabesh

"Keeps getting better…" - Terraflubb

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

"Couldn't be easier." - lwilkinson

"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!" - Lurkin Loge

What's New in Version 4.5.1

• Closing the window quits the app.
• Resolved rare issues when choosing the Library folder.


Screenshot 1
Screenshot 2

Customer Reviews

Great Little App allows you to clean stuff without having the dig thru the filesystem

Great little app, especially for 99 cents, that will not have me dig thru all these folders and directories to clean-up. Quick, easy and reliable, what more can you ask for. The cherry on top would be a simple scheduler or integration into Hazle…one can dream right.


It helped me clean out old logs, caches,temporary files and the downloads folders. Thankz.


This app is awesome. I recommend to anyone who is reading this.

Disk Diet
View in Mac App Store
  • $0.99
  • Category: Utilities
  • Updated: Dec 20, 2013
  • Version: 4.5.1
  • Size: 1.7 MB
  • Languages: English, French, German, Italian, Japanese, Russian, Simplified Chinese, Spanish
  • Seller: Tunabelly Software

Compatibility: OS X 10.7 or later, 64-bit processor

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. Developer Upgrade$1.99