ShadowLib: Shadowing Tool
Listen, Repeat, Speak Fluently
$5.99 · Designed for iPad. Not verified for macOS.
Made for 100LS: shadow any sentence on loop or slowed down, record and compare takes, fine-tune subtitle timings, and organise every material in one library.
ShadowLib turns audio and video you already have into a focused shadowing workout. Import a clip, attach its subtitle file, and the app splits it into sentences you can loop, slow down, and repeat until the rhythm sticks.
IMPORT YOUR OWN MATERIAL
• Add audio and video from Files or your photo library (MP3, M4A, WAV, MP4, MOV, WebM)
• Attach an SRT or VTT subtitle file to practice sentence by sentence
• Add a second subtitle file to show translations alongside the original
• No subtitle file? Play and record over the whole clip as it is
PRACTICE SENTENCE BY SENTENCE
• Jump to any line from the sentence list, or search for the one you want
• Set a loop count and let a sentence repeat while you shadow it
• Slow playback down until you can keep up, then bring it back to speed
• Blind mode hides the text so you train your ear instead of reading
• Show or hide the translation whenever you need it
RECORD AND COMPARE
• Tap once to record yourself shadowing
• Play your take back against the original
• Re-record as many times as you like
KEEP YOUR LIBRARY IN ORDER
• Organize materials into folders
• Filter by audio, video, or recently played
• Search material titles
• See how many times you have practiced each material
• Pick up where you left off with Continue last practice
BUILT TO STAY OUT OF THE WAY
• Light and dark themes
• English and Chinese interface
• Set your default playback speed and loop count once
Your practice recordings stay on your device.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Transcription (experimental): turn a material's own audio into sentences, on your device. iOS only.
- Transcription runs in the background: pause it, resume where it stopped, or retry.
- Turn on "Transcribe after importing" to get a draft of the sentences right after import.
- AI text to speech (experimental): describe an idea and the app writes the text and speaks it, with length, difficulty, and style to choose from.
- Add a subtitle by hand, or delete a material's subtitles, in the subtitle editor.
- The app is now available in French.
The developer, 坤辉 林, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 坤辉 林
- Size
- 26.6 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Kunhui Lin
