I developed an open source app that tries to solve this problem. Active recall at the topic level with spaced repetition email reminders using FSRS algorithm.

I developed an open source app that tries to solve this problem. Active recall at the topic level with spaced repetition email reminders using FSRS algorithm. https://github.com/Gerosullivan/Learntime https://github.com/Gerosullivan/Learntime