A suggestion about development of ERPNext Mobile Apps from a PWA developer.
Progressive Web App (PWA) can now deliver a lot of what native mobile apps can do, most “mobile app” features like geofencing, offline access and even push notification are available to PWA now.
The beauty for Frappe is that with ONE javascript code base you can handle desktops (windows, macOS) and mobiles (iOS, Android) without having the on-going overhead of maintaining multiple versions and the need to conform to Google and Apple app store rules.
Frappe should focus on the new unifying web app technology instead of old diversifying mobile app technology.
Making ONE full featured web app that works across platforms, is better than multiple half featured mobile apps cross different platforms - which causes confusion and increase support costs.
Don’t waste your resources on something that produce little advantage over your excellent web based offering. Move as quickly as possible to improve your web based offering by adding PWA features to it instead.