Hidding App from Multi-Tenant in App Installer

Currently we are hosting multi-tenants and have many different customers. We develop custom app for some customers, but all the app are listed under “App Installer” and all tenants are able to see & install.

Is there any way we can hide/disable the app so that only certain tenants are able to see & install them?

Set hide_in_installer in hooks as True

Is this still valid? I’ve added it to hooks but app is still visibile in installer

Does this work?