Mobile websites and mobile apps each have their own unique advantages. Where web offers immediate access and wide reach, apps are able to provide a rich, convenient experience that creates and engages loyal users. As per the report published by appannie, smartphone users spend 7x more time in native apps than in browsers, and access apps more frequently. Globally in H1 2017, native mobile apps accounted for 88% of time and 93% of sessions on Android phones (the remainder was spent in browsers).
https://www.indianretailer.com/article/multi-channel/mobile-commerce/Why-it-is-important-for-retailers-to-focus-on-app-strategy.a6141/