AskCleanAskClean

Guides

How to Clear System Data Storage on Mac

What System Data on Mac actually contains, why deleting files often frees nothing, and how to safely clear APFS local snapshots, system caches, logs, and old iOS backups to reclaim tens of gigabytes.

Updated 2026-08-28

Delete Xcode DerivedData & Developer Caches Safely

How to safely delete Xcode DerivedData, remove old simulator runtimes with simctl, and clear archives, device support files, and package-manager caches on a dev Mac.

Updated 2026-07-18

brew cleanup -s Explained: Clear Homebrew Cache on Mac

Understand brew cleanup -s (--scrub), preview Homebrew cache changes, remove old downloads and formula versions, and protect current tools and configuration.

Updated 2026-08-31

How to Completely Uninstall Xcode on Mac Without Losing Projects or dSYMs

Completely uninstall Xcode on Mac, remove rebuildable developer caches, and decide what to keep from Archives, DeviceSupport, Simulator data, and Command Line Tools.

Updated 2026-09-01

iPhone Storage Full but Nothing on Phone? Here's What's Actually Eating It

Why your iPhone storage is full when there's seemingly nothing on it: how to read the storage chart, what System Data really is, and how to reclaim space from photos, caches, and app data.

Updated 2026-07-21

AskClean vs CleanMyMac: Which Mac Cleaner Should You Choose?

An honest comparison of AskClean and CleanMyMac: one-time purchase vs subscription, ask-first cleanup vs one-click suite, feature breadth, safety models, and a five-year cost breakdown.

Best iPhone Photo Cleaner Apps: Photo Slim vs Clever Cleaner vs Swipewipe

An honest three-way comparison of Photo Slim, Clever Cleaner, and Swipewipe: pricing models, duplicate and blurry-photo detection, video compression, on-device privacy, and how to avoid the weekly-subscription trap.