Peace in our time! KhatzuMemo has been updated.
It’s not a pretty, user-interface update, it’s in the nuts and bolts behind the scenes. The repetition scheduling algorithm on KhatzuMemo has been modified to take into account more of the extensive data that get collected with each repetition of an item. I’d found that there was a problem whereby repetition scheduling on some items was prematurely optimistic — over-extension of interval. Now the interval is normalized, taking into account cumulative score, mean score and lapse ratio for a single item.
Anyway, the executive summary is — it’s the best KhatzuMemo repetition scheduling yet. I’m very proud of it and you should see a steady rise in your retention rate because of it.