10000sentences

PWA that teaches new vocabulary by having you guess target-language words inside real sentences.

Webfree

10,000 sentences is a progressive web app that teaches vocabulary in context: a sentence appears first in a language the learner knows, then they must guess its words in the target language, working through 10,000 sentences total. It's built for language learners who want vocabulary practice grounded in real sentences rather than isolated flashcards, and now runs as a PWA after the original Android app was discontinued.

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Problem & pain-point mapping
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Trust & credibility signals

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