iStat Menus is a little different to other apps, in that it is intended to always be running and in your menubar. The main app is used to configure its settings. Throwing the main app in the trash won’t remove it from your system (we wish it could, but that’s not technically possible).
The normal way to uninstall iStat Menus is to choose iStat Menus → Uninstall from the menubar inside the iStat Menus app, then click Uninstall.
We have some additional help: Installing and uninstalling iStat Menus
For those using Setapp, here’s some specific instructions.
Uninstalling iStat Menus with an active Setapp account
If you have an active Setapp account, please choose
iStat Menus →
Uninstall from the menubar, then click Uninstall.
Uninstalling iStat Menus without an active Setapp account
If you don’t have an active Setapp account, please run
/Library/Application Support/iStat Menus 5/iStat Menus Uninstaller.app
You can get to the uninstaller by choosing
Go to Folder while in the Finder, then pasting
/Library/Application Support/iStat Menus 5/iStat Menus Uninstaller.app into the text field and clicking Go.
If you have any other questions about iStat Menus, or need more help with uninstalling, please don’t hesitate to get in touch via our website, via Twitter, or via any other means.
Clarification: I work on iStat Menus. I am a founder and designer at Bjango.