One morning in the town of Everdale, Max awakens to find his dog Percival missing. Enter his plucky and impulsive friend Meredith (she wrangles imaginary beasts in her spare time) and readers are in the middle of a story featuring two problem-solving role models who put their heads together to tackle the situation at hand. In Max & Meredith (Move On Pluto LLC, iOS, $3.99, Android $2.99; PreS–Gr 3) viewers are invited to decide which paths the duo will follow as they make their way through the story and locate the missing canine. The vocabulary is worth noting—words such as “inexplicably,” “rudimentary,” “murky,” and “forlorn” fit comfortably in the adventure, which infuses a touch of science. One moment of ingenuity occurs when Max, Meredith, and Ollie the Ogre collaborate to build a pulley system to rescue Percival. The presence of Elder Zeke serves as a trusted source—he's there to help if the two need him, but they are encouraged to work through obstacles on their own. The app is easy to navigate, includes a read-aloud option, and offers enough choices to engage viewers’ interest. The colorful scenes feature appealing cartoon-like figures and creatures, with slight animations here and there (steam rising from a tea kettle, etc.) There's also a map that will help children make their way about town as they search for the dog. A trailer is available. VERDICT  While solid early elementary fare, slightly older struggling readers will appreciate the read-aloud option and game play.—Caroline Molnar, Worthington City Schools, OH