Method
FSRS vs SM-2, without the marketing
What the two algorithms behind almost every flashcard app really compute, and what the benchmark data does and does not show.
Docs
Words worth stashing, and how we built the thing that stashes them
Frequency lists for every language we support, honest explanations of how memory for words actually works, and write-ups of how the app is built. Every list is one you can start saving into the app the same day.
Guides
Method
How to save words while reading (and actually remember them)
A practical system for capturing the words you meet while reading in another language. What to save, when to save it, and why most saved words are never learned.
Method
How to choose a spaced repetition vocabulary app
The scheduling algorithm is the least interesting thing about these apps. What actually decides whether you are still using one in three months.
Method
Spaced repetition without making decks
Deck-building is where most people quit, and it is inherited habit rather than requirement. What you gain by dropping it, and what you give up.
Method
How spaced repetition actually works (and why cramming does not)
A plain-language explanation of the forgetting curve, retrieval practice, and why the best moment to review a word is right before you would have forgotten it.
Engineering
How Lexicamp is built, told through work that actually happened — with the measurements that made the case.
Engineering
Teaching an agent to audit our data layer
A custom audit skill turned a vague "it feels slow with lots of words" into five measured fixes: cold-launch deserialization dropped from 99.4 ms to 19.9 ms and the on-disk cache shrank 35%.
Word lists
The 100 most common words in each language we support, with a real example sentence for every entry.
Afrikaans100 wordsafArabic100 wordsarBangla100 wordsbnBosnian100 wordsbsBulgarian100 wordsbgCatalan100 wordscaChinese100 wordszh-HansCroatian100 wordshrCzech100 wordscsDanish100 wordsdaDutch100 wordsnlEstonian100 wordsetFinnish100 wordsfiFrench100 wordsfrGerman100 wordsdeGreek100 wordselHebrew100 wordsheHindi100 wordshiHmong Daw100 wordsmwwHungarian100 wordshuIcelandic100 wordsisIndonesian100 wordsidItalian100 wordsitJapanese100 wordsjaKoine Greek100 wordsgrcKorean100 wordskoLatvian100 wordslvLithuanian100 wordsltMalay100 wordsmsMaltese100 wordsmtNorwegian100 wordsnbPersian100 wordsfaPolish100 wordsplPortuguese (Brazil)100 wordsptRomanian100 wordsroRussian100 wordsruSerbian100 wordssr-LatnSlovak100 wordsskSlovenian100 wordsslSpanish100 wordsesSwahili100 wordsswSwedish100 wordssvTamil100 wordstaThai100 wordsthTurkish100 wordstrUkrainian100 wordsukUrdu100 wordsurVietnamese100 wordsviWelsh100 wordscy