iOS App Keywords Promotion

We need incentive iOS installs from iTunes search to promote keywords. We are interesting first in USA, UK, FR, DE, IT, AU - users, but other the world is also interesting. It's allowed also users from China for example, but users should change apple Id in setting of their devices. The main requirements: - GEO users (even if it's just switched appleId) - keywords installs (from iTunes search) - you have a lot of traffic (1000 per day minimum for one country)