ListenBack - English Shadowing

An AI-powered audio player built for English learners.
Import your favorite podcasts, listening materials, or any English audio as MP3. High-accuracy AI (Whisper) transcribes speech on-device so you can read along and catch every word you missed.
◆ Advanced Loop Playback

A-B repeat to loop tricky sections
Speed control from 0.5x to 3.0x (pitch preserved)
Waveform display for visual navigation
Bookmarks to mark & jump to key moments
Single track loop

◆ AI Transcription [Pro]

High-accuracy Whisper model, fully on-device
No internet required after initial model download
Auto-scrolling text synced to playback position
Tap any line to jump to that moment
Export as TXT or SRT

◆ Shadowing Practice [Pro]

Auto-loop by sentence from transcription
Record your voice with the microphone
AI transcribes your speech and compares to the original
Accuracy score to track your progress
Highlighted diff shows matched and missed words
Practice history to keep you motivated

◆ Free Features

File import & full playback controls
Waveform display, A-B repeat, bookmarks
Speed control & loop playback

◆ Pro Upgrade (one-time purchase)

AI transcription
Shadowing practice
Text export

Perfect for TOEFL prep, IELTS study, podcast learning, audiobook comprehension, pronunciation practice, and any English listening training.