12levels: English Vocabulary

Learn words & keep them

Only for iPhone

Free · In‑App Purchases

iPhone

Learn English words and actually keep them — spaced repetition shows each word right before you'd forget it. 12levels helps you build real English vocabulary — and actually keep it — with the science of memory. Most apps make you cram. 12levels uses scientific spaced repetition (the open FSRS algorithm) to show you each word right before you'd forget it, so it moves into long-term memory with the least effort. • Learn at your exact level — a precise CEFR ladder from A1.1 to C1.3, not a vague "beginner / intermediate." • Read AI books and articles matched to your level. Tap any word for its meaning, an example, and American pronunciation. • A real-time progress map of the words you already know. • Keep your streak with goals and achievements. • Your words on the Home Screen with a large widget. Start with a 14-day free trial. Built on memory science. No ads. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://12levels.app/legal/terms Privacy Policy: https://12levels.app/legal/privacy

Events

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Iuvenalii Khlopkov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Contact Info
    • User Content
    • Identifiers
    • Usage Data
    • Diagnostics

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Iuvenalii Khlopkov
Size
  • 133.5 MB
Category
  • Education
Compatibility
Requires iOS 26.1 or later.
  • iPhone
    Requires iOS 26.1 or later.
Languages
English and 3 more
  • English, Japanese, Russian, Spanish
Age Rating
4+
In-App Purchases
Yes
  • 12levels Pro — Lifetime $149.99
  • 12levels Pro — Monthly $9.99
  • 12levels Pro — Yearly $59.99
  • Learn More
Copyright
  • © 2026 Iuvenalii Khlopkov
  • Privacy Policy

    • More by Iuvenalii Khlopkov

    You Might Also Like