Mobile only features?

I am new to Meteor so i was wondering about the possibilities.
I am making a wed app that is also to be used on mobile. However, there are features that will be mobile only. How would i go about this? if at all. E.g. for android: my plan is to use java to implement an api. Unless someone can suggest a better option?

Thanks in advance.

Why not use Node.js to implement an API?

I mean like using Google Places API for example. Or using weather API.