Blog
Plain-English guides to where Mac storage actually goes.
Old iOS simulator runtimes: 55 GB you can delete in one command
Every Xcode update leaves the last runtime behind, 7 to 10 GB each, and du can't see them. simctl can. 15 Sep 2026
Project build folders: the 54 GB hiding in ~/Development
Flutter build/, node_modules, Gradle, Rust target. How to find it, what a clean costs, what not to touch. 15 Sep 2026
Docker Desktop is using 30 GB on your Mac. Here's what to delete.
Why Docker.raw looks like 494 GB, docker system df, and the prune commands that never touch your volumes. 15 Sep 2026
Time Machine local snapshots: why deleting files didn't free any space
Hourly snapshots hold deleted data until macOS thins them. List them, delete them with tmutil, know what you lose. 15 Sep 2026
WhatsApp is using 18 GB on your Mac. Where it is and what's safe to delete.
One hidden folder per chat under Group Containers. Why the Mac copy is a copy, and the one caveat. 15 Sep 2026
What is "System Data" on a Mac, and how do I reduce it?
Every folder it lives in with typical sizes, what's safe to remove, and why it grows back. 16 Sep 2026
DaisyDisk alternatives for Mac: free and paid
GrandPerspective, OmniDiskSweeper, CleanMyMac and ddeploy. What each is for and what it costs. 16 Sep 2026
Why is System Data so huge on my Mac?
Where Apple's mystery bucket actually lives, Library, containers, snapshots, swap, and how to shrink it safely. 30 Aug 2026
Is it safe to delete DerivedData?
Yes, with one neighbor to be careful about. The rules for Xcode's caches. 30 Aug 2026
Clean up Ollama and Hugging Face models on a Mac
Local AI quietly takes 50–150 GB. Where it hides and the tool-native way to take it back. 30 Aug 2026