There have been an increasing number of augmented reality since apps recently. If you search for "augmented" on the Mobile Science database you can find a selection.

Molecule Viewers are particularly notable.

MolAR lets you visualize proteins and molecules through augmented reality.

AR VR Molecules Editor allows one to build and manipulate 3D molecules models of organic and inorganic compounds.

If I've missed any please let me know about them.