Spaced Repetition Research + Knowt Algo Planning

Cards have 4 options

Again, Hard, Good, Easy

Basic

One directional

Overlapping Cloze

Not free

Image Occlusion

diagram labelling (an add-on)

Multiplier

Computed from Last Score (Hard = 1.2, Good = Ease, Easy = Ease * Set Bonus) + Ease

Days Late

Number of days your card was waiting after its set study time (edge case if the user doesnt return to study on set date)