Install
Upload it under Plugins → Add New Plugin → Upload Plugin, then activate.
Install straight from GitHub with WP-CLI:
wp plugin install https://github.com/kareemsamman/kareem-app-manager/releases/download/v2.0.1/kareem-app-manager.zipUpdates itself. It ships its own updater (Plugin Update Checker), so new versions appear under Dashboard → Updates.
WordPress plugin manager with GitHub-based auto-updates
Releases
2 releases. Each count is every asset in that release; expand a row for the breakdown.