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About Must-Know 5K English Words

MustKnow 5k helps English learners quickly and effectively learn more than 4,200 words based on the Oxford 3000/5000 using the flashcard method. Smart flashcards • Words appear in random order; swipe and tap to flip the card. • Each card includes the Turkish , Spanish , Deutsch and Italian meaning and an English example sentence. • Tap to listen to the correct pronunciation offline. • Add your favorite words to your favorites list. Study by level • A1–A2, B1–B2, C1–C2 — start from any level you prefer. • Words marked as “I Know” will not appear again. Streaks and daily goals • Set your daily goal, starting from at least 15 words. • Study every day, build your streak, and track your progress. 60-DAY STREAK REWARD • Complete your daily goal for 60 consecutive days and earn an Amazon Gift Card! • Apply through the “Claim Reward” option in the app; the reward will be delivered by email. • This reward is offered for promotional purposes and is not affiliated with or sponsored by Amazon. Daily Challenge • Test yourself every day with 10 randomly selected C1–C2 words. Free and Premium • The first 15 words in each level are free. • Premium unlocks unlimited words and access to all levels. Dark/light theme • Fully offline • Ad-free • No account required. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Subscriptions can be managed through your App Store account settings. Terms of Use: https://msalikoc.github.io/mustknow-legal/terms.html Privacy Policy: https://msalikoc.github.io/mustknow-legal/privacy.html

What’s new

Version 1.0.2 · Updated October 17, 2026

New: Learning Path! • Path tab: a step-by-step journey from A1 to C2, with 30 lessons in every level. • Each lesson includes word cards, phrases, grammar notes and varied practice: matching, listening, typing, fill-in-the-blank and multiple-choice quizzes. • Tap an example sentence on a word card to see its translation in your language. • Placement test on first launch to recommend the right level for you. • Redesigned path with stars, sections and progress tracking. • In-app notice when a new version is available. • Performance improvements and bug fixes.

App privacy

The developer, Ali Koc, reported these privacy practices to Apple.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Purchases: Purchase History
  • Identifiers: Device ID
  • Usage Data: Product Interaction

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Purchases: Purchase History
  • Identifiers: Device ID
  • Usage Data: Product Interaction

Used for: Third-Party Advertising

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