Making app making tool with unity

Hi, I wanted to ask if it’s possible to make a windows app with unity which can build android and iOS apps on itself. It will require the windows app to also make the build process within itself.

In other words it would be a strip down engine built with unity which can do primary things.

Thanks very much

Doubt it. Windows Unity can’t make iOS apps – needs to run Xcode. Even Unity on a Mac an externally copy of XCode. I assume Unity also runs some external compiler to make Android apps.