Many readers know Toca Boca's "play studio" apps designed with preschoolers in mind. Here's something from them that's a little different. It combines sandbox activities with a subtle ecological message. Toca Nature (Toca Boca A B, iOS $2.99; K-Gr 2) delivers a hip, pretty opportunity to create and enjoy a curated natural environment. Landforms can be created and trees planted on a blank canvas with the swift swipe of a finger. Changing the perspective only requires a tap to an icon. Berries and other treats can be collected and then given to the animals that appear as viewers zoom in close and travel through the ecosystem. A camera icon allows users to take pictures of the wildlife at close range. The focus here is on exploratory play; and there is plenty of it. There are no explicit instructions—and most wonderfully—no in-app purchases, ads, or distractions.

Interior screen Toca Nature (Toca Boca A B) © Löfgren & Svenningsson

While beautifully designed, this digital version of nature is a far cry from representing the real thing. In this perfectly pixelated world, predators only eat fish and berries and rabbits bounce merrily by viewers' sides. Wildlife is friendly, slow, and will only multiply if viewers plant more trees. The limited geographic options may cause some young explorers to lose interest quickly. Habitats cannot be saved and may disappear when the app is not in use. Eco-conscious folks will cringe at the ax icon, which allows users to destroy their creation with one flick of the wrist. As the trees disappear, the animals flee until there are none left. A note for parents explains settings, the various tools used to sculpt this world, and offers a few discussion points. Toca Nature is stunning to look at; but its limited ecological diversity and informational value are problematic. A beautiful, sad reminder of how nature is taken for granted. A trailer is available.—Caroline Molnar, Delaware City Schools For more app reviews, visit our dedicated app webpage.