SpacedRepetition

Spaced repetition system metrics

totalFactsInInterSessionRepetition
Type: integer
required

Number of facts in repetition stage (inter-session repetition)
totalFactsInIntraSessionRepetition
Type: integer
required

Number of facts in review stage (intra-session repetition)
totalFactsPastTheirDueTime
Type: integer
required

Number of review/repetition facts that are past their scheduled review time