On: Ask HN: I'm 15, won a grant to develop a suicide p...

[throwmeaway2525]

Check the mailing list for this. There wasn't a large amount of discussion about mobile options when I last checked, but one solution seems to be what you've already listed above: Phonegap/Cordova.

https://groups.google.com/forum/#!forum/meteor-talk

It didn't seem like there's a "perfect" solution for this yet (in any realm--it's all still evolving).