Yes, it's FSRS based on this article https://github.com/open-spaced-repetition/fsrs4anki/wiki/Spaced-Repetition-Algorithm:-A-Three%E2%80%90Day-Journey-from-Nov

Yes, it's FSRS based on this article https://github.com/open-spaced-repetition/fsrs4anki/wiki/Spaced-Repetition-Algorithm:-A-Three%E2%80%90Day-Journey-from-Novice-to-Expert#day-3-the-latest-progress https://github.com/open-spaced-repetition/fsrs4anki/wiki/Spa... Huge thanks to the dude.