Learn languages the way your brain is wired.

Chunk Box is an intelligent audio repeater that turns cognitive psychology and language-acquisition research into a precise, repeatable daily practice.

Explore Chunk Box Try in Browser

🧠 Cognitive Psychology 🔬 Neuroscience-backed 🎯 Precision Listening

Smart Chunking Audio split into meaningful units

Shadowing Mode Listen, repeat, get feedback

Spaced Practice Algorithms aligned with memory curves

Product

A practice lab in your pocket

Chunk Box combines audio precision, pronunciation scoring, and learning science to make every minute of listening count.

Smart Sentence Chunking

Import any audio and let the app split it into replayable, meaningful chunks at the right boundaries.

Shadowing & Recording

Repeat after native audio, record yourself, and compare rhythm, intonation, and clarity side by side.

Pronunciation Scoring

Get objective, repeatable feedback on your spoken output and track improvement over time.

Bookmarks & Notes

Save difficult sentences, add vocabulary notes, and build your personal corpus of learning material.

Vocabulary Marking

Highlight unknown words, review them in context, and export lists for spaced repetition.

Progress Statistics

Visualize listening time, repetition cycles, accuracy trends, and streaks to stay motivated.

Features

Every feature is tied to a learning principle

Chunk Box translates cognitive psychology and language-acquisition research into concrete practice tools.

Smart Sentence Chunking

Import any audio and let Chunk Box split it into replayable, meaningful chunks at natural boundaries.

Chunking & working memory →

Shadowing Mode

Listen to native audio, repeat immediately, record yourself, and compare rhythm and intonation side by side.

Shadowing technique →

100LS Practice

Loop the same scene: listen 100 times, shadow 100 times, and speak 100 times until it feels automatic.

100LS method →

Spaced Repetition

Bookmarked chunks and marked vocabulary resurface at intervals tuned to the forgetting curve.

Ebbinghaus forgetting curve →

Active Recall & Feedback

Record your output, get objective scoring, and retry until accurate. Active output beats passive review.

Retrieval practice & deliberate practice →

Habit & Social Reinforcement

Daily streaks, lightweight goals, and shareable clips keep practice consistent and socially accountable.

Habit formation & peer influence →

Science

Built on four research pillars

Chunk Box is not just a media player. Every feature is grounded in findings from cognitive psychology and language acquisition.

100LS Method — Repeated listening and shadowing with the same material to build phonetic, semantic, and emotional memory.
Pimsleur Natural Acquisition — Spaced recall, core sentence patterns, and spoken output timed to the memory curve.
Habit Formation — Lightweight daily goals and progress tracking that turn language practice into a sustainable routine.
Peer Influence — Inspired by Judith Harris' The Nurture Assumption, the design encourages sharing, imitation, and authentic social interaction.

About our research

About

Where psychology meets engineering

Yijiang Medical Technology transforms advances in psychology and medicine into practical, science-backed learning products.

Cognitive Psychology

We translate research on attention, working memory, and long-term memory into features that make learning stick.

Medical & Neural Science

Our design is informed by neuroscience on auditory processing, motor speech, and neural plasticity.

User-Centered Design

Every iteration starts from real learning scenarios, tested with language learners in the wild.

Get in Touch

Interested in Chunk Box, our technology, or partnership opportunities? We'd love to hear from you.

feedback@ginmind.com