Stephen -- really good points. I think the breadth of the countries is still surprising / bizarre. While Nigeria does sound plausible based on your comment, others like Mongolia, Kazakhstan, Barbados, etc do not have the same characteristics and so def a bit stranger.
If iOS users tend to be a small affluent subset of the population of small developing countries such as Mongolia, then they're more likely to be travelers and downloading apps needed in other countries, right? If the total number of downloads of all apps is pretty small in those countries, then it's no big deal to make it into the top 1000, because it might just mean there were a few dozen downloads of your app.
Great point. Lyft may still be the surprise in this. Affluent Mongolians are unlikely to be traveling and looking for a way to share rides with strangers, no? Possible perhaps but sounds much less likely.
Thoughts?