Startup Power is a macOS application built with SwiftUI that allows you to configure your MacBook’s automatic startup behavior.

It directly modifies NVRAM variables (BootPreference for Apple Silicon, AutoBoot for Intel) to control these options.
The app automatically adapts its behavior depending on your Mac type.

If this can help the community, the application and the source code are available here:

https://github.com/chrisbasse/Startup-Power