HomeAppsBooks & ReferenceIgneous RocksApps like Igneous Rocks Here are some great alternatives to Igneous Rocks by Spikkez Studios : Handbook of Rocks ★4.2 List of rock types ★4.3 Petrologic ★4.5 Virtual Microscope - Minerals ★4.3 Geology Toolkit Lite ★4.3 Geology Dictionary ★4.5 Rocks, Minerals, Crystal Guide ★4.0 Atlas of 3D Rocks and Minerals ★4.3 Rock Identifier - Gemstone ★4.3 Rock Identifier by Photo ★4.4 Rock Master: Rock Identifier ★4.2 Rock ID - Stone Identifier ★4.1 Handbook of Mineralogy ★4.0 Gold Rush Miner ★3.9 Rocks ★4.4 Crystal Guide® Pocket Edition ★4.6