Depends on what features you want to build. If you do need access to the phone's native APIs, you WILL need to make a native app. HTML5 works great for first ve

Depends on what features you want to build. If you do need access to the phone's native APIs, you WILL need to make a native app. HTML5 works great for first versions and specifically if everything can be done over back-end API. HTML5 first, Native later. To make available more seamless "native" experience to the user.