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Shadow native speakers.Get instant feedback.
Upload a reference audio and your imitation. Our AI compares transcripts, pacing, intonation, and emphasis — then gives you personalised coaching that adapts as you improve.
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Content accuracy
Levenshtein alignment flags every missing, extra, or substituted word.
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Pacing & pauses
Speech-rate WPM and pause analysis compared against the reference.
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Pitch & emphasis
F0 and energy are time-normalised and correlated for meaningful prosody scores.
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Progress tracking
Every session is stored so you can chart your improvement over time.
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Adaptive coaching
Tips and drills shift based on your weakest, least-improving dimensions.
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Private by design
Audio files are deleted immediately after analysis — nothing is stored.