Identify rocks, minerals, and gemstones by taking photos. Get detailed geological information, compare specimens, and build a personal digital collection. Explore crystal lore and ask follow-up questions for deeper learning.
1.0.3
September 30, 2026
Simpler Premium plans. • Premium is now a yearly subscription or a one-time Lifetime purchase • Eligible new subscribers start with a one-week free trial on the yearly plan • Existing monthly subscriptions continue as normal — nothing changes for you
MoreUnlimited identifications and full toolkit.
TrueStone uses artificial intelligence to analyze photographs of rocks, crystals, minerals, and gemstones. It suggests the most likely identification based on visible characteristics and provides up to three possible matches with confidence labels.
Yes, you can add up to three photos from different angles for a single specimen. This helps TrueStone examine more visible details and improve the accuracy of the identification.
TrueStone offers detailed geological facts including chemical composition, Mohs hardness, color variations, luster, transparency, streak, cleavage, fracture, crystal system, geological formation, common locations, and uses.
Yes, eligible new subscribers receive a free trial for their first year on the yearly Premium plan. After the trial, it renews at the standard yearly price.
You can build a private digital collection by saving specimen photos, identification results, favorites, tags, dates, location notes, personal notes, and guided observations within the app.
Yes, TrueStone allows you to create a printable PDF of selected specimens or export your entire collection as a CSV file. These exports can be saved or shared using standard iOS share options.
TrueStone offers both monthly and yearly subscription options for its Premium service. Prices are displayed before purchase and may vary by country.
TrueStone is rated for ages 4 and up, making it accessible for younger users interested in learning about rocks and minerals. The app provides educational content in an understandable format.
