How hard would it be to limit the apps on a GrapheneOS phone? I need a phone for calls, signal, maps, and a camera.
Is there a straightforward way to create a version of the OS with no browser or app store and a short list of apps?

    Mediabloke
    You can set up the owner profile with a strong password, then create a secondary user and set it up the way you like. Then log back in to the owner profile and block the secondary user from installing apps.

    Settings > System > Multiple users > user name > Disallow installing apps - turn on