Langsi: Learn Vocabulary

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Everyone
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Content rating
Everyone
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About this app

Langsi is your focused app for sustainable and structured vocabulary building. No clutter, no noise – just a clear learning path and the proven Leitner box system (spaced repetition) for maximum results.

What Langsi offers you:

• Clear Learning Path: Follow a structured guide without distractions. Always know exactly what to study next.
• Spoken Language & Context: Don't learn words in isolation. Master vocabulary through realistic examples and practical spoken language.
• Proven Spaced Repetition: Review words at scientifically optimal intervals for long-term retention.
• Zero Distractions: A clean, minimalist interface designed to minimize noise and maintain deep focus.
• Trackable Progress: Easily monitor your progress and see which words are locked into your memory.

Whether for daily life, travel, or work – Langsi takes you directly toward fluent comprehension.

Eliminate distractions and build your vocabulary systematically!
Master vocabulary with a clear learning path and real spoken context.
Updated on
Oct 6, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, Personal info and 5 others
  • This app may collect these data types
    Personal info, Financial info and 3 others
  • Data is encrypted in transit
  • You can request that data be deleted
  • Committed to follow the Play Families Policy
Content rating
Everyone
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App support

About the developer
DATA INFORMED DECISIONS LLC
my@data-informed-decisions.com
8 The Grn # A Dover, DE 19901-3618 United States
+1 716-296-0224