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Make your own segments
Mark sentence boundaries directly. No subtitle API is required.
Listen at your own pace
Mark sentence boundaries while a video plays, then jump back, loop difficult parts, and see your practice progress.
Works with Bilibili and YouTube · English and Chinese interface

Built for deliberate listening
Mark sentence boundaries directly. No subtitle API is required.
Loop one sentence, repeat a range, or pause before moving on.
Review playback time, repetitions, speed, and listening trends.


Three simple steps
Local by default
Sentence markers, history, and learning statistics are stored locally. Import and export make backups easy.
Read the full privacy policyUse the videos you already enjoy and practice one sentence at a time.
Add to Chrome