Mohs Free app for iPhone and iPad

Alternatively known as "Minerals, or hardness scale".

Mohs is a graphical display of the Mohs hardness scale used for identifying minerals.

Features include scale and mineral views, as well as a search function.

The scale view gives the Mohs scale with its 10 indicator minerals. The hardness of common objects as compared with the indicator minerals is given to the side.

The mineral view includes a photo, information on hardness, streak, cleavage, crystal form/habit, and additional diagnostic properties.

Compatible with iPod Touch and iPhone.

Ad-supported version of the Mohs app.