Guides to Mac storage
Plain answers to what a full Mac makes you ask: what System Data is, what is safe to delete, and what to leave alone. Each guide opens with the answer and works without the app.
Understand your disk.
What is using the space, why macOS doesn't say, and what to remove first.
- What is System Data on Mac?What macOS puts in System Data, why it grows, and which parts are safe to delete.
- Mac storage full: what to remove firstWhat to remove first when the disk is full, what to check, and what to leave alone.
- How to clear the cache on a MacWhich caches are safe to delete, which hold things you'd miss, and how to clear each.
- Time Machine local snapshotsWhat local snapshots are, when macOS removes them, and how to delete them yourself.
- Your system has run out of application memoryWhat to do when a Mac shows this message, and how to find what is using the memory.
- Delete old iPhone backups on a MacHow to find and remove backups in Finder, and what to check before you do.
- Photos and Messages taking up spaceHow to make them smaller without losing what you want to keep.
- Free up space on a developer's MacXcode, Docker, package caches, build folders and AI models: what is safe and what isn't.
Compare the apps.
Where StorageJanitor is the better choice, and where the other app is.
- StorageJanitor vs DaisyDiskA disk map against an explainer. Both $9.99 once.
- StorageJanitor vs CleanMyMacOne job for a one-time price, against an all-in-one suite.
- What StorageJanitor touches, and what it never touchesWhat it removes and what it leaves alone, in plain words.
- PricingFree to scan; $9.99 once for the full version.
See what's filling your Mac.
Scanning is free. Nothing is removed until you've seen the list.
- Free to scan and to remove up to 2 GB in total
- $9.99 once for the full version
- For Apple Silicon Macs
Coming soon: not available to download yet. Prices are what it will cost at launch.