Cross-promotion, which involves the practice of setting up apps that promote each other to their audiences, is a wonderful, free way to promote your app. In practice, app developers advertise each other’s apps via advertising placements within those apps. It’s a perfect approach for app developers on a tight budget, And, although there’s no real currency being exchanged between the app developers using this model, the app downloads this promotion strategy can drive are certainly money in the bank for your app business.