TidyMacThe short version
The built-in Storage settings are free and fine for Photos, Documents and apps, but “System Data” can’t be opened or explained there. TidyMac splits System Data into snapshots, backups, caches, developer files and more, explains each, and cleans only what’s safe.
Side by side
| Feature | TidyMac | macOS Storage settings |
|---|---|---|
| Open and explain System Data | Yes | No |
| Time Machine snapshot thinning | Yes | No |
| Developer files (Xcode, simulators, Docker, npm) | Yes | Partly (Developer category) |
| History and forecast | Yes | No |
| Price | $9.99 once (scan free) | Free, built in |
Based on macOS Storage settings’s public website, October 2026. Prices and features change; tell us if something is out of date.
Who should pick which
Pick macOS Storage settings if…
- Your problem is photos, videos or documents you can see
- You only need a quick overview
Pick TidyMac if…
- System Data is the biggest slice
- You want to know what’s inside it and what’s safe
About macOS Storage settings
System Settings › General › Storage is built into macOS. It recommends iCloud storage, optimising Apple TV downloads, and emptying the Trash automatically, and it lists large documents.
Try TidyMac free
The scan and every explanation are free. Cleaning is $9.99 once. Use both tools if you like.