Hi, you can build custom apps like customer portals, courses, HR portals, educational apps, Custom CRMs, and more with the Formaloo app builder.
Here are two examples:

https://www.formaloo.com/en/roadmap/
Startup 101: https://play.google.com/store/apps/details?id=co.idearun.startup

Live apps means published apps, not draft ones.