How does the spaced repetition system in Duolingo compare to dedicated flashcard apps like Anki for retaining Spanish vocabulary long term?
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The searches the AI actually ran for this prompt.
SEED QUERY
How does the spaced repetition system in Duolingo compare to dedicated flashcard apps like Anki for retaining Spanish vocabulary long term?
3 real searches · 1 real-search pass
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
Classifying 3 queries…
Searches and sources
ChatGPT3 real searches · gpt-6
Duolingo spaced repetition system vocabulary review official how it works Google ↗
Anki manual FSRS spaced repetition scheduling official documentation Google ↗
research spaced practice retrieval practice second language vocabulary long term retention study review Google ↗
- What spaced repetition algorithm does Anki use? · faqs.ankiweb.net
- anki/docs-site/faqs/what-spaced-repetition-algorithm.mdx at main · ankitects/anki · github.com
- Duolingo Blog · blog.duolingo.com
- A Trainable Spaced Repetition Model for Language Learning · research.duolingo.com
- ERIC - EJ1251020 - A Review of Laboratory Studies of Adult Second Language Vocabulary Training, Studies in Second Language Acquisition, 2020-May · eric.ed.gov
- Improving second language vocabulary learning and retention by leveraging memory enhancement techniques: A multidomain pedagogical approach - Nur Basak Karatas, Oya Özemir, Jarrett T. Lovelett, Bora Demir, Kemal Erkol, João Veríssimo, Gülcan Erçetin, Michael T. Ullman, 2025 · journals.sagepub.com
- ERIC - EJ1404417 - Does Spaced Practice Have the Same Effects on Different Second Language Vocabulary Learning Activities? Fill-in-the-Blanks versus Flashcards, Modern Language Journal, 2023 · eric.ed.gov
Queries
3 queries · click a column to sort
| Query / type | Search | Intent | Query class | Routing format | Cluster | Freq ↓ | Weight |
|---|---|---|---|---|---|---|---|
Duolingo spaced repetition system vocabulary review official how it works OBSERVED | Google ↗ AI Mode ↗ | — | — | — | — | 1x of 1 | |
Anki manual FSRS spaced repetition scheduling official documentation OBSERVED | Google ↗ AI Mode ↗ | — | — | — | — | 1x of 1 | |
research spaced practice retrieval practice second language vocabulary long term retention study review OBSERVED | Google ↗ AI Mode ↗ | — | — | — | — | 1x of 1 |