Coverage chart / Disk Diet
How to update Disk Diet on your Mac
Disk Diet is published as the Homebrew cask disk-diet, and the app can also update itself. Below is how to run that update yourself, then how Floodtide does it for you, alongside every other app on the Mac. Homebrew describes Disk Diet as "Free up disk space".
Update Disk Diet by hand
- Let Disk Diet update itself. Open Disk Diet. It checks for new versions on its own, and if it has not offered one yet, look in the Disk Diet menu, or under Help or its preferences, for Check for Updates, then let it download and relaunch.
- Upgrade the Homebrew cask. If you installed Disk Diet with Homebrew, open Terminal and run
brew upgrade --cask disk-diet. Homebrew downloads the current build, checks it against the checksum it publishes and replaces the app in your Applications folder. - Or download it from tunabellysoftware.com. Otherwise get the current build from tunabellysoftware.com, which is the same download Homebrew points at. Quit Disk Diet, open the download and put the new Disk Diet in Applications in place of the old one: a disk image is dragged across, an installer package runs its own steps. Your settings and documents live outside the app and are kept.
brew upgrade --cask disk-dietThat is one app. The same walk, through a different menu or page each time, is what every other app on the Mac asks of you, which is where Floodtide comes in.
The shorter route: one click in Floodtide
Floodtide reads the same Homebrew record for Disk Diet that the brew command above does, without needing Homebrew installed, to learn which version is current. When yours is behind, the row appears under Updates with the version it will move to and the download size. Pressing Update, or Update All, does the rest:
- The vendor's own build is downloaded, several apps at a time, with real progress.
- The download is verified against the checksum the catalogue publishes.
- Disk Diet is asked to quit politely if it is open, and never forced.
- The bundle is swapped and the old version kept for seven days, so Undo Last Update always works.
- The replacement's code signature is checked; a build signed worse than the one you had is rolled back automatically.
Every download of Disk Diet is checked against the checksum Homebrew publishes before anything is replaced.
If Disk Diet lives in a folder macOS protects, the swap asks for your administrator password once for the whole batch, exactly as the Finder does when you install anything by hand.
What Floodtide knows about Disk Diet
- Floodtide reads
- the Homebrew cask disk-diet
- Developer
- tunabellysoftware.com
- Version the source named on 18 October 2026
- 5.6.3
- Downloads come from
- tunabellysoftware.com
- Installed by Floodtide
- Yes, in one click, with the rest of your apps.
- Updates itself
- Yes, when you open it. Floodtide covers it anyway, so the Mac is checked whether or not you do.
- Each download is checked against
- the checksum Homebrew publishes
Read from the source on 18 October 2026. The app reads it live.
Questions about Disk Diet
Does Floodtide update Disk Diet?
Yes. Disk Diet also ships its own updater, so it can keep itself current when you launch it. Floodtide covers it anyway, because a self-updating app only updates when you happen to open it, and it tells you nothing about the other apps on the Mac. Floodtide shows Disk Diet beside everything else and updates the whole set in one pass.
How does Floodtide install a new version of Disk Diet?
It downloads the vendor's official build, verifies it against the checksum the catalogue publishes, quits Disk Diet if it is running, swaps the bundle, and keeps the previous version for seven days so the update can be undone.
Will updating Disk Diet lose my settings?
No. Floodtide replaces the application only. Preferences, licences and documents live outside it and are untouched.
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