[abhimskywalker]

I agree with the above, and additionally you can check out http://ionicframework.com/ to build once for web (with backend REST API) and then port it to iOs and Android pretty easily. They offer nice-looking UI elements as well specially suited for mobile use cases. I found porting a simple angularjs based webapp to android and iOs pretty easy (thought only tested it as development prototype). Should be worth checking out.