If you want to increase the number of people who can use your app, there’s almost no better way to do it than to translate your app into other languages. The answer is to use Google to find helpers to translate your app for you. The translations aren’t as clean as if you found a native speaker to translate for you, but they’re a great place to start on the cheap. You might consider getting the initial translations done by Google, then reaching out to your user community to find volunteers to edit the translations for you, or using an outsourcing website such as ODesk to find translators. Even craigslist can be a great resource!