A function intelligence engine receives input regarding application program content, including functions or capabilities of the application program that can be separately purchasable, and can further receive information regarding advertisements that can be displayed to users within the context of the application program. User-specific information is also received, including a user's current status and context within the application program, as well as a user's history, both within the application program, as well as in other application programs. Based on such information, the function intelligence engine determines and compares the probability of a user purchasing, versus the probability of the user consuming advertising, to acquire the separately purchasable function. The function intelligence engine then generates, and presents to the user, options that increase the chances of the user obtaining the separately purchasable function and maximize the benefit received by an application program author for providing the separately purchasable function.