Google Play Promo Code Promotions are one of Google Play Developer Console tools that help you grow your app business. By using these, you can launch effective acquisition campaigns (and significantly increase your installs metric), partner programs, or simply use these codes as incentives (as “thank you” or “sorry” gestures). But before launching such campaigns, you should be aware of how it works and consider the limitations of the Google Play promo codes. So, let’s dive into the technical side.