I have read a lot of similar questions but none seem to answer directly my issue. I am working on a project and want to implement a way to launch 3rd party apps from within a web app. I have found SOME URISchemes and got these launching fine on iOS and some on Android devices by looking in the info.plist file. I have noticed however that a LOT of apps, (most of the ones I've tested to be honest) don't have a URIScheme that I can find to launch the app (I may be looking in the wrong place). There is not really a set list of apps I want to launch, as this will be differ when it is being used by different people. I really would like the ability to launch ANY app installed on the phone/tablet. All the web app will do is link to a database I create as I get feedback from those editing and using the web app which I will manage.
So my question is this, how can I launch ANY app from within the web app?
Apps I'm looking at are not on lists like http://handleopenurl.com/scheme etc.
Any help will be greatly appreciated.