한공

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About this app

One-handed English vocabulary learning completed in just 5 minutes of your commute.

The lightest vocabulary app for memorizing TOEIC, CSAT, and business English words with a single swipe.

Hanson Gongbu is a Korean-style flashcard learning app that turns spare time into vocabulary skills.

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✋ Why Hanson Gongbu?

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▶ One-handed learning

Whether holding a subway handrail or a coffee cup at a cafe. Check meanings by tapping a card,

Check "I know" or "I don't know" with a single swipe. English vocabulary learning is finished with just one finger.

▶ A day's worth in just 5 minutes

20 words a day, short sessions of less than 5 minutes. Simply turn it on and memorize without a complicated study plan.

Instead of burdensome daily goals, it helps you build a light, daily study habit. ▶ A clean vocabulary app with minimal ads

No forced ads on the lock screen. No ads interrupting your learning.

All you need is words, you, and a few spare moments. ━━━━━━━━━━━━━━━━━━━━━━━━━

📚 26 Vocabulary Books — From Exams to Daily Life

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[Exam Preparation]

- TOEIC Vocabulary (Frequently Used TOEIC Words)

- CSAT Vocabulary (Essential CSAT Words)

- Introduction to TOEFL Vocabulary

[Daily Use]

- Cafe English (Ordering & Payment Expressions)

- Travel English (Airports, Hotels, Asking for Directions)

- Netflix Expressions (Frequently Used in Dramas & Movies)

- Everyday Conversation Vocabulary

[Business]

- Business Email Expressions

- Meeting & Presentation Vocabulary

- English Vocabulary for Office Workers

[Trends]

- Daily Updated News Vocabulary

- Timeliness Based on Foreign Media such as BBC & CNN Vocabulary

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🧠 Smart SRS Algorithm — Meet us again just as you are about to forget

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Hanson Study applies the Spacing Repetition Algorithm (SM-2), proven in Anki and Quizlet.

- "I know" response → Gradual exposure at intervals of 1 day → 3 days → 7 days → 14 days

- "I don't know" response → Re-exposed the next day, complete memorization through repetitive learning

- Two consecutive correct answers → Mastered, excluded from review pool

Even if you study briefly every day, the algorithm accurately pinpoints when you are about to forget and shows it to you again.

Retain information in your mind longer without increasing your study time.

Vocabulary ━━━━━━━━━━━━━━━━━━━━━━━━━━

🌱 Gamification — From Seed to Bamboo Forest

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- 10-Stage Growth System: Seed → Sprout → Sapling → … → Bamboo Forest

- 16 Collectible Badges (Streak · Learning · Master · Special)

- Track Consecutive Learning Days with Daily Streak Counter

- Learned Word Count, Accuracy Rate, and Master Card Ratio at a Glance

Every single word you memorize every day becomes a small seed that builds your own forest.

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🎯 Recommended for:

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- Office workers who want to utilize spare time during their commute on the subway or bus

- Students preparing for TOEIC, TOEFL, or CSAT English exams who want to solidify their vocabulary first

- English beginners who find paper vocabulary books burdensome

- Learners tired of vocabulary apps with lots of ads

- Those who want to build up their English vocabulary consistently in short bursts every day

- Those who want to expand their English vocabulary for business emails and meetings

- Those who want to reduce the number of unknown words when watching Netflix or American TV series

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TOEIC words, TOEIC English words, TOEIC Voca, TOEIC words,

CSAT English words, CSAT English Vocabulary, CSAT Vocabulary,

TOEFL Vocabulary, Business English, English for Office Workers, English Study, English Learning, English Conversation Vocabulary, Everyday English,

Flashcards, English Flashcards, Vocabulary Memorization App,

Commute English, Spare Time English, 5-Minute English,

Free Vocabulary Book, Ad-Free Vocabulary Book, Korean-Style Vocabulary Book,

Intervald Repetition Learning, SRS Algorithm, English Vocabulary SRS

Download Hanson Gongbu now and start filling your 5-minute commute with English vocabulary today.