There are services for that. It is called incentivized advertising. People are rewarded to do things for your app (such as installing, opening, playing for 5 mins everyday, etc.). You will need pay an App promoting agencies (one who has a large number of users who are eager for their rewards), they will provide you with those rewarded action. This service is much cheaper than organic advertising - where app promoting agencies help you to find "real" users.
— modified on Sep 4, 2015, 6:23:37 AM
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