Okay, this is going to be biased as I actually have bought a few of these mini apps ... but, this is just a rip off of these guys: http://www.hottrixdownload.com. I have their iBeer and been drinking beer on demand for ages now! They have heaps of these mini apps without the need for "SDK" or hacking the iPhone. Looks like someone is a little late to the party ;) They also do custom (I think) from what this page says: http://www.hottrix.com/iDrinks/