Welcome to the FSRS4Anki wiki!

A brief overview of FSRS: ABC of FSRS

Frequently asked questions about FSRS: FAQ

The formulas of memory used in FSRS: The Algorithm

The training process of FSRS: The mechanism of optimization

The comparison of SM-2, FSRS v3, FSRS v4, and other algorithms: The Benchmark

Other resources/tools:

• Some posts and articles about FSRS
• Anki FSRS Visualizer (open-spaced-repetition.github.io)