can we create app using phone

Question

how can we create the app on phone if yes than??

Answer 1

I'm not sure about iOS, but there're some apps available in the android's play store which are designed to help the non-developers create some basic android apps in the android device itself. For eg:
https://play.google.com/store/apps/details?id=com.besome.sketch

These are just one of the shortcuts, but keep this in mind, you cannot be a developer using some shortcuts.