Disk Diag helps you to quickly find out how much disk space is used in your home folder by
- Application Caches and Logs
- Downloads and Mail Downloads folder
- Items in your Trash
- Browser Data for selected browsers
- Large files
- Application Leftovers
- iOS Software Updates
- Xcode generated files (for developers)

For your convenience you can select such predefined groups and delete all their content with a click.

We'd like to know how to improve Disk Diag, contact us at Rocky Sand Studio

What’s New

Version 1.6

[added] New module to remove unnecessary iOS software updates
[added] New module for developers to remove Xcode generated files (archives, derived data, etc.)

Ratings and Reviews

4.5 out of 5
48 Ratings

48 Ratings

Sean Foo ,

Simple flow

This app works as expected, easy and simple, 4 stars given due to there’s no way to clean again but Quit and re-Open the app all over again.

AwesomeNg ,

Could be better

Could scan more folders for a “deeper” clean

App activates discrete GPU unnecessarily, wasting precious battery life if left idle

Justin0429 ,

Simple~ Reliable~ Fast!

It’s an incredible app. It helps me a lot for saving my Macbook’s storage. Thanks

App Privacy

The developer, Rocky Sand Studio Ltd., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.