Articles About spaced repetition
How Much Does Duolingo Cost in 2026? Super, Family, Max
Duolingo's courses are free, but the US App Store lists six different prices for Super. Every plan, what it adds, and how to pay less, checked 2026-10-13.
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13 Oct
Rosetta Stone vs Babbel (2026): Prices, Studies, Verdict
Rosetta Stone vs Babbel in 2026: dated US prices, 25 vs 13 languages, how far each course goes, and what the company-paid studies really show.
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12 Oct
Rosetta Stone vs Duolingo (2026): Prices, Studies, Verdict
Rosetta Stone vs Duolingo in 2026: the new Sapphire app, dated prices, 25 vs 40 languages, and what the company-paid studies really show, so you can pick one.
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11 Oct
How to Improve Your Vocabulary: 7 Methods That Work
Most vocabulary advice says "read more." Here is what research says it takes to learn a word for good, plus a 10-minute daily routine and tools with prices.
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4 Oct
Babbel vs Duolingo (2026): Prices, Studies, Verdict
Babbel vs Duolingo compared on 2026 prices, free tiers, course levels and the research behind each app, so you can pick the one that fits your goal.
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2 Oct
Anki for Language Learning: Settings, Decks and Daily Load
How to use Anki for a new language: how many new cards a day you can keep up with, the settings that matter, which cards work, and shared decks rated.
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30 Sep
How to Study With Flashcards: 7 Rules From the Research
Seven flashcard habits tested in real studies: when to flip, when to drop a card, how big a stack, how many new cards a day, and how far apart to review.
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28 Sep
Best Flashcard App for Android: 27 Checked
We checked 29 flashcard apps on Google Play on 24 September 2026. Here are the 27 worth your time, what each one really costs, and which to skip.
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24 Sep
Best Anki Add-ons (2026): 25 That Still Work on Anki 26.09
25 Anki add-ons checked against Anki 26.09 on 22 September 2026, with install codes, plus the famous ones that are now built into Anki or blocked.
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22 Sep
