Busy parents can more easily capitalize on teachable moments every day and build on what their kids learned at Sunday school thanks to mobile apps that publisher David C. Cook launched this year. Available for the iPhone and iPod Touch, the “Tru Homefront” and “Rio Family Currents” apps are free downloads designed to complement the Tru and Rio Sunday school curricula. The apps include Bible verses, conversation starters, activity suggestions, music downloads and more.