I think that preparing your app to support multiple languages is the important part. You can successfully do that by adding one extra language ( besides English ). For North America add Spanish.

Now your app is structured properly to use text from languages files ( and not hardcode in code ). This allows you to send the English file to a translation agency, get it translated in another language and add the the new language to he mix.

You should do that in subsequent versions of the app. As you see the need.

If you need more technical info on how to do that, feel free to schedule a call.