Are your competitors' apps available in these other countries that you're in?
If not, that might explain the discrepancy.
If not, that might explain the discrepancy.
Since it's an offline app I thought the 3G / WiFi coverage might be way better in the US than in other countries. Might this be one issue?
I'm assuming your app is localized into a bunch of languages. While your competitors' apps are available in these countries as well, are they also localized into commonly used languages?