DiskCity turns your disk into a living pixel city, where every folder is a building and forgotten files gather dust. Autopilot keeps it from filling up overnight, and the Harbour sails cold projects to your own NAS or SSD.
Free scan · First 10 GB of cleanups free · macOS 14+ · Apple Silicon and Intel
The real island from the app, on a sample Mac. Hover a building, ask the Mayor, or flip to night.
HarbourCold projects sail to your own NAS or SSD, verified, with a link left behind.Sail some files 
AutopilotPick a floor. Sweepers clear rebuildable junk overnight so you never hit it.Set a floor 
Recycling YardPersonal files wait 30 days before anything is gone. One click restores them.How cleanup works The projects and videos you haven't opened in months sail to your own NAS, external SSD, SFTP server or iCloud Drive. Every file is checked with SHA-256 before the original leaves your Mac, and a link stays in its place. Nothing goes through our servers.
Cold on this Mac
Sail to
Part of Pro. Google Drive, Dropbox and OneDrive are next.
Set a floor. Autopilot forecasts when you'll hit it, warns you days ahead, and sends the sweepers out overnight while your Mac is idle and plugged in. It asks first unless you tell it not to.
In the morning there's a short report in the menu bar: what went, how it comes back, and how many days of room you have.
Keep at least
40 GB free
Without Autopilot you'd hit the floor in 4 days. With it, you never do.
Height is size, so the folders eating your disk are the towers you see first. Time shows up as weather: dust after a month, cobwebs after three, boards after six, and a ruin after a year nobody opened it.
Drag the slider. That's the same warehouse, aging the way your Downloads folder does.
Opened 2 days ago
In use. Lights on.
Moving a file to a holding folder on the same disk frees nothing. So DiskCity keeps two numbers apart and never adds them together.
Caches, build data, dependencies and downloadable models are removed straight away, with the tool's own command where there is one. Each removal is logged with how it comes back.
rebuilds on your next buildnpm installollama pulldocker builder prune
Anything without a rebuild rule waits in the Recycling Yard for 30 days. It counts as reclaimable, restores in one click, and returns its space only when the Yard is emptied.
A read-only scan of the founder's 245 GB MacBook found 24 GB free. Four districts held over 60 GB, and most of it rebuilds itself or was never opened again.
Xcode, node_modules, package caches
Months of coding-agent transcripts
Rebuilt by each app as needed
Docker Desktop's disk image
$ claude mcp add diskcity -- /Applications/DiskCity.app/Contents/MacOS/diskcity-mcp✓ Added MCP server diskcity> my build failed, disk is full. find me 30 GB ⏺ diskcity.scan_city() ⏺ diskcity.find_junk(kind: "rebuildable") ⏺ diskcity.propose_plan(target_gb: 30) Plan: 30.3 GB, rebuildable only. Repos protected. Waiting for your Approve in DiskCity…
Claude Code, Codex and Cursor can read the map and propose plans over MCP. They can't clean anything: every plan waits for your Approve in the app. Prefer the terminal? brew install diskcity-scan is the free, read-only scan.
Disk cleaners have earned their reputation. These are the rules DiskCity is built around, and they show up on the first screen you see.
No subscription. The scanner and rulebook are open source, so you can check exactly what DiskCity looks for.
Scan
Free
The city, the Mayor's explanations, and your first 10 GB of cleanups.
DiskCity
$29
All cleaning with no size limit, every rule pack and the Recycling Yard. Once.
DiskCity Pro
$49
Everything, plus Autopilot, the Harbour, and the CLI and MCP for your coding agents. A year of updates included.
Download DiskCity, run the free scan, and see what your disk looks like from the air.
