Custom Mobile App - Front End Technology

Hi Experts,

We're currently assessing the technology to be used for a custom mobile application. I call this a custom because there's a possibility to add a chatting, video uploading, and some other custom feature.

I've found out that we could use SAP Netweaver Gateway to expose SAP functionality as REST web services. Now, we wonder what front end technology should be used? Could we go with SAP UI5 (the technology which Fiori uses), or should we choose a different technology (hybrid/native mobile platform) to fulfill the custom requirement?

Thank you & regards,

Suwandi C.