Version 1.12.1 · macOS 15.0+

Thanks for downloading Plumby.

Your download should start automatically. If it doesn’t, download it manually.

While it downloads, here’s what to do next.

Get it running

1Open the disk image and drag Plumby into your Applications folder.
2Right-click the app and choose Open the first time.
3Plumby opens its window, and puts a mark in the menu bar. Both are yours to keep or turn off.

Short, practical reads on memory pressure, System Data, and the disk space macOS hides.

Buy it like a tool, not a service: $19/yr or $59 once. The app stays yours even if you stop.

An honest look at where Plumby differs from CleanMyMac and DaisyDisk, and where it doesn’t.

What’s new in v1.12.1

Plumby no longer stops responding about a minute after you open it. A background task saving its own baselines could trip a check meant for the main thread and take the app down with it. It now hands the work back where it belongs.
Your licence key no longer travels in the address of the update check. It went in both a header and the web address, and servers write full addresses into their logs as a matter of routine — so a key in an address is a key copied into a log file. It now travels only in the header, and the code that builds the address is no longer given the key at all.
Plumby opens faster, and asks less of an older Mac. Launch costs 11% less processor time. Running a command no longer waits on a run loop that polls, a scan of developer toolchains no longer runs on Macs with that section switched off, and checking who signed an app no longer re-reads every file inside it.
You can attach the last crash report to a message you send us. Off unless you switch it on, listed in full before it sends, and stripped of file paths and anything identifying the machine.
The licence email said three Macs when a licence covers two. It now says two, from the same value the service enforces.