Hello!
I would go for the HTML5 web application, by doing so, your service would be available for all kind of browser ready devices such as: Android, iPhone, iPad, Windows CE, Desktop PCs, Laptops, smart tvs, etc.
I'm new to Freelancer and I want to build a solid and good reputation, that's why my bid is low, so if you are interested, please let me know!
About me:
I'm a web developer with more than 7 years of successful experience in web services. My background as employee lists some of the most important companies globally such as: Herbalife International, TeleTech Holdings, Bank of America, etc.
I'm a passionate technology guy, self-teach and I love to code, that's my way of life.
Kind Regards!