Ionic is an HTML5 mobile application development framework targeted at building hybrid mobile apps.

Feature of this application
1) 130+ easy examples
2) Edit your code and see instant output
3) Save your code for future reference

Google Map Tutorial
When you use the google map tutorial please don't use the given API key it is the free key so only 25000 API call only allowed you can also get a API key through google developer console (it is free).