Enable in-app advertising. One of the greatest advantages in-app ads have is the customers’ effortless geolocation targeting. It helps analysts and marketers to access and digest such important data as the current apps trends in this or that country. For this, you can use tools, like Google’s AdMob or search for any other alternatives. In-app purchases (like accounts upgrading, buying additional premium features, subscriptions, etc.); our advice is to include a freemium model which means that some of your app’s features are free, but others, more advanced ones are paid by means of account upgrading or purchasing a certain feature or the collection of features.