macOS says the developer cannot be verified. What now?

The published build carries a Developer ID signature and is notarized by Apple, so that warning means the download was damaged or the file did not come from us. Delete it and download again from the link on gpslarp.com. Do not override the warning.

Where does GPSLarp install itself?

GPSLarp.app goes into /Applications, and nothing else is installed: no menu-bar agent, no login item, and no background service left running when the app is closed.

How do I uninstall GPSLarp?

Drag GPSLarp.app from Applications to the Bin. Because nothing privileged is installed alongside it, that is the whole removal. Removing the app does not close your account or cancel anything; that is done from your account on gpslarp.com.

Does GPSLarp run on an Intel Mac?

No. It requires Apple Silicon — an M1, M2, M3 or M4 — and there is no Intel build. Check under the Apple menu, About This Mac.

GPSLarpHelp

The installer won't open, or I can't find the app

You downloaded GPSLarp and macOS refuses to open the installer. Or the installer finished and you cannot find what it installed.

The download is a signed, notarized macOS package that installs one thing — GPSLarp.app, in your Applications folder. If macOS says the developer cannot be verified, the file you have is not the one we published.

01Where it goes

Open the downloaded package and follow the installer. It puts GPSLarp.app into /Applications and nothing else. There is no menu-bar agent, no login item, and no background service left running when the app is closed — that is a deliberate design decision, and it is the same reason the app asks for an administrator password each session instead of once forever.

To open it afterwards: the Applications folder in Finder, or Launchpad, or Spotlight — press Command and Space, type GPSLarp, press Return.

02What macOS should say, and should not

01Normal

macOS verifies the package with Apple, finds the developer signature and the notarization, and opens the installer. On a first open you may see a brief check; that is expected.

02Not normal — "cannot be opened because the developer cannot be verified"

The published build carries a Developer ID signature and is notarized by Apple, so this warning means one of two things and neither of them is a setting you should change:

The download was damaged or incomplete.
The file did not come from us.

Delete it, and download again from the link on this site. Do not override the warning: the whole point of it is to stop you running something whose origin macOS cannot establish, and if this product ever genuinely produced it, overriding would be the wrong fix.

Download for Mac The one link. It always points at the current build, so there is no version to pick and no mirror to find.

03Not normal — "you can't open the application because it is not supported on this Mac"

An Intel Mac. GPSLarp requires Apple Silicon — an M1, M2, M3 or M4 — and there is no Intel build, now or planned. To check which you have: Apple menu › About This Mac. See requirements.

03Installing an update

The same package, over the top. There is nothing to uninstall first and no settings are lost.

Quit GPSLarp before you install over it

Installing an update while the app is running has never been tested, and the app does not currently stop you or warn you. Quit it first. This is a gap in the product rather than an ordinary precaution, and saying so is more useful than pretending the precaution is routine.

04Removing it

Drag GPSLarp.app from Applications to the Bin. Because nothing privileged was installed alongside it, that is the whole removal — there is no uninstaller to run and no helper to hunt down.

Removing the app does not close your account or cancel anything. That is done from your account on this site.

05If that did not work

The installer finished and the app is not in Applications. Search for it with Spotlight before reinstalling — if it is somewhere else, it was moved rather than not installed.

The download fails or the file is tiny. The package is tens of megabytes, because it bundles the iPhone-connection tooling it drives. A file much smaller than that is a failed download, not a lightweight build.

The app opens and shows a sign-in screen you cannot get past. That is a different problem and it has its own page: sign-in trouble. The sign-in screen covers the whole window, so it is easy to read as a broken install.