[zoltrix303]

I've never actually developed a mini program, but worked on projects with our china teams to develop some activation for our brand on WeChat.

What I understand is that a mini program needs to be "packaged" and shipped to WeChat as a bundle. The size of the bundle is relatively small. (~10mb ?)

Of course you can load some content from outside, not everything is within those 10mb, but I think it's still relatively limited. Calling it apps within apps is a stretch.