The document discusses mobile apps and widgets. It describes how mobile apps have extended device functionality beyond what manufacturers intended. It also notes that games dominate 1/3 of the app market. It lists several major app stores and their market shares, led by Apple's App Store and Google Play. Apps are only active when opened, while widgets continuously run small programs like clocks and calendars. Widgets can add functionality and live updates to apps and websites. Creating cross-platform mobile apps requires significant resources initially but offers engagement benefits and low ongoing costs to update.