Ever had your Mac almost (or completely) run out of disk space?

If so, you've probably also tried to find out what's taking up so much space and how to get rid of junk. That's why almost 100,000 people trust Disk Diet to safely and easily clean their Macs.

Here's what you can clean with Disk Diet:

• Removes unused language translations from applications.
• Removes unused applications.
• Cleans up caches.
• Cleans out the downloads folder.
• Cleans out the mail downloads folder.
• Cleans out old iOS software updates.
• Cleans out old application logs.
• Cleans out old system logs.
• Cleans out old developer folders.
• Empties the iPhoto trash.
• Empties the trash.
• Choose which drive to put on a diet, including external USB drives.

We offer quick and easy support. If you have any issues, please email us and we will get back to you as soon as possible.

What's New

Version 5.4.2

[New] Full macOS 10.13 compatibility.
[New] Added ability to choose unused apps by last month, last year or last 2 years.
[New] Using two decimal places for GB sizes (ex: 1.54GB instead of 1.5GB)
[New] Cleaning out more caches folders.
[Fixed] Issue where some apps would show as never used when they had been previously launched.
[Fixed] Minor issues with some UI alignments for different languages.

Ratings and Reviews

4.5 out of 5

12 Ratings

12 Ratings

Just works

PHD in the 613

Love this app. It’s my first go-to when my drive is getting tight on space, before even emptying the trash since it does that for you. Really effective at scouring the contents of all those directories under ~/Library that I don’t want to think about myself.

Helpful in tight situations :-)

Flash Bruce

I’m not sure that this gets rid of absolutely all things that are probably unnecessary for most people, but it does categorize them and give you simple choices.

Doesn't work on external drives, despite words saying it does


Words describing the app indicate it works on internal and external drives, Not true. I have IMAC, running latest OS/10.7.2 w one internal drive and an external drive with 2 partitions for Back ups and Time Machine. Time Machine does not appear in the selection window, so can't put that drive on a diet, Backups does, yet when I select the Backups drive to put on a diet, none of the selections can be checked, thus it doesn't work.

There should be some way for the buyer to feel confident that the App really does what the marketing words say it will do. I have the latest version of the App, guess that means to QC testing was done. A low price for an App should not mean it doesn't work.


Tunabelly Software Inc.
2.4 MB
English, French, German, Italian, Japanese, Russian, Simplified Chinese, Spanish
Age Rating
Rated 4+
© 2017, Tunabelly Software Inc.


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