iPhone & Android Mobile Open Source Browser Based Apps

I have a website that is already functioning and optimised for smartphone and tablet devices. I require someone to develop an Android & iPhone App that accesses that website. I expect the easiest way to do so is take an Open Source IOS or Android Browser, put it into Kiosk mode, so that it only accesses the single website url, disable any external search or url bar. Here's an outline of how it should work. The user opens the app on their device. The splash screen appears with an image and logo. It automatically logs them into the website, giving them access to the functions of the website. If someone tries to access the website using a browser, rather than the App, they should just get the splash screen. 1. You will need to add a splash screen or opening screen that shows up on the phone or tablet. I will provide the basic design. 2. You will need to alter the website a little so it can only be accessed using an App, probably easily done by making a log-in splash screen, so that unless the user is accessing it from a device using the App, they only get the splash screen. 3. You will need to be able to add the Google Play licensing key to the APK, and also Zipalign the APK. And you will need to do the same with whatever equivalent Apple Apps use. Sounds fairly easy. I already have a Google Play account and an Apple Developer account. The Google Play has the 1.0 version of the App functioning already, however it is just a basic script that opens a browser and joins the website. The 2.0 needs to be developed as above. I have not yet done any developing on the Apple version. If you have experience in this area it should hopefully be quite simple. Please include an estimated completion time. If you do not have experience in this area please do not apply.