Apps like Martley Rocks

Here are some great alternatives to Martley Rocks by BrooksDesigns :
Geology Toolkit Premium
Geology Toolkit Premium
★4.5
Geology Toolkit Lite
Geology Toolkit Lite
★4.3
Atlas of 3D Rocks and Minerals
Atlas of 3D Rocks and Minerals
★4.3
Geology Dictionary
Geology Dictionary
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Geology Concepts
Geology Concepts
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Rock & Crystal Identifier - ID
Rock & Crystal Identifier - ID
★4.6
Handbook of Rocks
Handbook of Rocks
★4.2
Oxford Dictionary of Geology
Oxford Dictionary of Geology
★4.3
Stone Mountain Guide
Stone Mountain Guide
★3.6
Rock Identifier: Stone ID
Rock Identifier: Stone ID
★4.5
Geology Quiz
Geology Quiz
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Minerals guide
Minerals guide
★4.3
Handbook of Mineralogy
Handbook of Mineralogy
★3.9
Rock Identifier - Gemstone
Rock Identifier - Gemstone
★4.0
Rock: Identifier & Stone ID
Rock: Identifier & Stone ID
★4.1
Rock ID - Stone Identifier
Rock ID - Stone Identifier
★4.3