[heddhunter]

I just went through this exact situation a few days ago. The designer of the app chose Avenir, which is included in iOS 6 but is not part of Android, so I reached out to Linotype to find out how to license it for an Android app. The responses were confusing and inexact (and slow - apparently they only have sales staff in Germany, and I'm in California, so the time difference means every go round takes a whole day). After 2-3 email exchanges I gave up trying to get a coherent answer and we're using a bundled-with-Android font. Oh well!