Libraries' focus on mobile devices as information portals (e.g., text reference and mobile Web sites) and productivity tools (e.g., calendars and documents) has caused them to overlook a more subtle opportunity. Smartphones and tablets are ideal for advocacy and organizational storytelling, which are increasingly important functions of libraries. This article discusses advocacy and four main categories of applications (more commonly known as apps) to support it: apps for photos and videos, personal databases, concept maps, and business intelligence. The objective of this article is to inspire others to experiment with these tools and apply them to their advocacy efforts.