Multiple mobile apps connecting to one Meteor app per backend

I've been working with Meteor for the past 5 months and have been really impressed with the framework and the community. I'm looking for community guidance or pointers.

I am currently working on a project and am considering building two mobile apps built using the meteor framework that are served by one Meteor app per backend. One mobile app will be the paid version and the other free. The free version has no login screens.

I have a messy solution, i.e. clone the same meteor app and configure it to serve for each mobile app, but use the same mongodb backend. This is currently working, but my guess is that it will become a pain to maintain in the long run.

I'm sure there is a more elegant / better solution that can be accomplished by passing parameters at build time for mobile apps. Any suggestions please?