I am building a mobile app for a community, Although most of the target group use android os, however some of them use IOS, windows and blackberry. Almost all the leaders use IOS. Now, the time to present this mobile app is limited. I have finished building the mobile app in native android platform. 

I have heard of phone gab, which helps you build an app for all platforms. Please I am now confuse, should I build the app in all the native languages or use phone gap?