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Spaced repetition resources

The best tools and reading for building a spaced repetition practice, from the software that schedules reviews to the research behind the forgetting curve.

Optimized for Spaced Repetition · Learners memorizing vocab, facts, and formulas.

Showing 8 resources

Gwern: Spaced Repetition for Efficient Learning

advanced

A deep, well-cited essay on why spacing works, the cost-benefit math of reviews, and what kinds of material are worth carding at all.

Theory & researchFreeLong-form article1-2 hours
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Augmenting Long-term Memory (Michael Nielsen)

intermediate

A practitioner's essay on using Anki seriously, including how to write cards that don't fail and how to make abstract knowledge stick.

Theory & researchFreeLong-form article1 hour
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Anki (AnkiWeb)

beginner

The most powerful and widely used free SRS, with FSRS scheduling, add-ons, and full control over card types and intervals.

SRS softwareFreeDesktop & mobile appOngoing
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Anki manual: scheduling & deck options

intermediate

Official documentation on new-card limits, intervals, and the FSRS scheduler; the reference for tuning your daily workload sustainably.

Algorithms & tuningFreeDocumentation1 hour
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FSRS scheduler explainer

advanced

The open-source Free Spaced Repetition Scheduler, which fits intervals to your real recall data and typically cuts reviews versus old SM-2 defaults.

Algorithms & tuningFreeRepository & wiki1-2 hours
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20 Rules of Formulating Knowledge (SuperMemo)

intermediate

Piotr Wozniak's classic rules for writing good SRS cards, including the minimum-information principle that keeps cards from lapsing.

Decks & card designFreeArticle45 minutes
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Image Occlusion Enhanced (Anki add-on)

intermediate

Turns diagrams, maps, and anatomy figures into hide-and-reveal cards; far stronger than text cards for spatial and visual material.

Decks & card designFreeAnki add-onOngoing

RemNote

beginner

A note-taking app with built-in spaced repetition, letting you turn outlines directly into cards; good for learners who want notes and SRS unified.

SRS softwareFreeWeb & mobile appOngoing
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FAQ

How should I use these spaced repetition resources?

Choose one foundation resource, one practice resource, and one review loop before opening more tabs.

Should I use free resources first?

Yes. Start with free resources until your error log shows a specific gap that needs a paid course, book, or tutor.

How do I avoid passive resource browsing?

Pair every resource with a timed sprint, a visible output, and a recap note before moving to the next item.

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Use it now

Turn this page into a live sprint

Start the matching room for Spaced Repetition, then use the sprint plan as the first task and recap script.

Spaced repetition resources
Focus target: Spaced Repetition
Block 1 (25 min): closed-book recall or one timed practice set.
Break (5 min): mark confusing items without opening a new task.
Block 2 (25 min): correct misses and write the next first step.
Done: one score/error note plus one queued task for tomorrow.
Start Spaced Repetition roomChecklistCompare methods