StartApp - join me , lets make some money together!

In that situation if I would use StartApp I would just turn it off for users from outside USA and use sth else for them.

The answer for this question seems pretty obvious… Ad networks pay according to advertisers. If most of them run campaigns only for USA, so the most valuable downloads will be from USA.

A lot of ad networks have campaigns in other countries than USA. If you check

mobiThinking guide to mobile advertising networks (2012) | mobiThinking

and look under “Geographical coverage” for the different networks, you will see that a lot of ad networks have activity in other countries. Startapp should get more connections with ad networks, who have activity outside of USA. It would probably increase the revenue both for them and for us.

Yes, expanding worldwide is a strategic step and not fast. For example, only recently I noticed Airpush notifications campaigns from my country. None from Leadbolt. Many advertisers worldwide are just beginning to know and consider these new types of ad formats.