Minicraft for iOS has been taken down, even though, I asked Notch for permission on Twitter in december and got an ok in Jan 2012 (he said as long as it was a Non-Commercial Release). I received this email yesterday.
On 6/20/2012, we received a notice from Mojang AB and Notch Development AB that Mojang AB and Notch Development AB believes the app listed below infringes their intellectual property rights. In particular, Mojang AB and Notch Development AB believes you are infringing their copyright and trademark.
Developer: Phil Harvey
So, I have taken the game down, even though they were happy I had released as a Non-Commercial App, Notch has changed his mind and would prefer the game to be taken down. Source code is available at Minicraft AS3 / Flash Source code