That is why I don't understand. People just want everything Open Source but in fact as I said, you can optionally just type your Bitcoin Address. IT IS NOT REQUIRED!! And if you just use the app you can see by yourself that the app opens a web browser with the desired faucet.
Also, this app is also available and approved for Windows Phone and it already have 94 and counting downloads, meaning it also passed Microsoft validation process.
So, what are you hiding in the source code then?
Approved Windows Phone thingy is not that impressive. If you'd open your source code, people would probably be a lot more interested in your app. With the source code closed, I assume you're trying to do something shady.