In Leitner system, say I have a box a review daily, a box I review every Tuesday and Thursday, and a box I review only in Friday. If I add a new card on Wednesday, I will review it next day (Thursday) then next day (Friday). Gap is not increasing, it's always 1 day.
The same defect sometimes occurs in the more advanced 7-level Leitner system. If you look at that schedule, you might think it's more accurate and gap between reviews will increase. But, if you add a card in day 16 for example, you will review it on day 17, then day 18, then day 20. Gap is increasing, but not as good as expected.
Anki system is more accurate, but it's not child-friendly. I'm trying to create a child-friendly Leitner system schedule, which is more accurate than popular schedules present on the internet, does anyone know How to make one?
