Check if the iOS application from Safari “Browser” is installed using java script or any other way.

Question

Check if the application is installed on iOS from the browser safari using java script or any other way.

I need to check on my site the weather set by my application. If so, then I would like to open the application when someone opens my site.

I have a URL to open my application. Right now I have given two options on my website:
1) I have installed the application, the application will open
2) Available in the app store.

I want to decide that I have a weather application installed. Using any web technology.

Answer 1

The new smart app banner feature in iOS 6 may cover what you are looking for.

https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/PromotingAppswithAppBanners/PromotingAppswithAppBanners.html