Mirage applications are intended to be used in science classroom. To use this application you need to download and print the marker set: http://mirage.ticedu.fr/?p=2471
How to use the app ?
Card 1 and 2 : find out the differences between Z-retinal and E-retinal
Card 1 to 12 : Quiz : Identify E and Z isomers for each cards
Once downloaded this one does not require an Internet connection.