The apps
Stereochemistry Trainer
R/S, E/Z and CIP priorities on real molecules, plus Fischer, Newman and chair forms.
Coming to Google Play
More apps are on the way: molecular shapes, mechanisms, NMR, IR, orbitals, acids and bases, and more.
How they work
Pay once
The first level of every app is free. One purchase unlocks the rest. No subscription, no ads, no account.
Checked answers
Structures and answer keys are generated and verified by software when each app is built, not typed in by hand.
Private and offline
The apps collect no data and work without an internet connection.