Android & iOS small wrapper app for Viewing and dismissing a web page

We need a small quick solution for a mobile app, Android & iOS to enable our students to read a (password protected) page. this page can be an HTML or PDF - anyway its a requested page from the server. The app is not for general distribution, but only to specific group of people. In general It does one action: browsing a password protected page from a predefined fixed link. Once the user had changed the focus from this app - it should dismiss the page Please REFER to attached PDF for more and complete details.