U.S. religious communities have frequently adapted popular technologies to their own projects. They've done so in ways that pushed forward those technologies as much as their own group aims. Yet this cooperation can seem counter-intuitive. In an Introduction to Religion course this summer, several of my students expressed surprise that religious groups made apps - that Muslims received notifications about the call to prayer on mobile phones, or Catholics used their phones to guide them through the examination of conscience that precedes Confession. Religions are traditional, my students said; they don't like modern technology or culture.