Waiting times are learning times!
Every waiting situation, no matter if doctor, traffic jam or train, offers you the ideal opportunity to learn and repeat your flashcards.
All you need is your smartphone!
Simple level system!
Learning cards that you can solve will be placed in the next tray, whereas learning cards that you weren't sure about will be downgraded.
Thus the weak learning cards are asked more often.
No sequencing effect!
If you always repeat in a rigid sequence, you will easily get confused if this changes in the exam.
Your flashcards are therefore constantly shuffled anew.