Education
Cassette Tape
Retro Language Learning Player · On-Device AI Subtitles & Precision A/B Looper
Never miss that fast 3-second phrase again! Tap once to master listening. A specialized language learning media player crafted for shadowing and dictation practice across English, Japanese, Chinese, and more. Blending the retro analog charm of a vintage cassette tape with state-of-the-art 100% on-device AI transcription, repeat any segment with precision and auto-generate subtitles completely offline.
Key Features
📱 App Features
One-Tap Precision A/B Section Looping 🔁
Simply tap [Set A] at the start of a sentence and [Set B] at the end to loop difficult words or fast linked sounds repeatedly.
• Repeat Count: Loop 2, 3, 5, 10 times or infinitely (automatically proceeds to the next section after completion)
• Multiple Saved Loops: Register multiple focus sentences on one screen and switch between them instantly with a single tap
• Repeat Count: Loop 2, 3, 5, 10 times or infinitely (automatically proceeds to the next section after completion)
• Multiple Saved Loops: Register multiple focus sentences on one screen and switch between them instantly with a single tap
0.1s Fine-Tuning & 0.5x~2.0x Precision Speed Control ⏱️
Never miss a single syllable or chopped word.
• ±0.1s / ±1s Nudge Buttons: Refine start and end points with pinpoint accuracy
• Quick 5s / 10s Rewind: Instantly replay the last few seconds with a single tap
• 0.5x ~ 2.0x Speed Slider: Practice at slow speeds to master pronunciation and accelerate to train high-speed listening
• Sleep Timer: Automatically stops playback after your chosen duration
• ±0.1s / ±1s Nudge Buttons: Refine start and end points with pinpoint accuracy
• Quick 5s / 10s Rewind: Instantly replay the last few seconds with a single tap
• 0.5x ~ 2.0x Speed Slider: Practice at slow speeds to master pronunciation and accelerate to train high-speed listening
• Sleep Timer: Automatically stops playback after your chosen duration
100% On-Device AI Subtitle Generation 🤖
Have audio or lecture video without a script or subtitles?
• 100% On-Device AI: No files are uploaded to external servers, guaranteeing total privacy
• Full Offline Support: Transcribe audio anytime on airplanes or overseas without internet access
• 4 Languages Supported: Korean, English, Japanese, Simplified Chinese & automatic language detection
• 100% On-Device AI: No files are uploaded to external servers, guaranteeing total privacy
• Full Offline Support: Transcribe audio anytime on airplanes or overseas without internet access
• 4 Languages Supported: Korean, English, Japanese, Simplified Chinese & automatic language detection
Real-Time Subtitle Sync, Dictation & Translation 📝
Follow along with generated subtitles for effective shadowing and dictation.
• Live Sync & Auto-Scroll: Current sentences highlight in real-time as audio plays
• One-Click Sentence Looping: Tap repeat next to any subtitle line to replay that specific sentence
• Edit & Translate: Edit transcript text directly to check your dictation and look up unfamiliar words with instant translation
• Live Sync & Auto-Scroll: Current sentences highlight in real-time as audio plays
• One-Click Sentence Looping: Tap repeat next to any subtitle line to replay that specific sentence
• Edit & Translate: Edit transcript text directly to check your dictation and look up unfamiliar words with instant translation
Bookmarks & Study Notes 🔖
Bookmark key idioms, tricky pronunciation points, or exam prep sentences with personalized notes. Jump directly to any saved timestamp from your bookmark list for rapid review.
Web Streaming URL Support 🌐
Paste URLs from podcasts or online lectures to stream instantly without downloading, complete with full A/B looping and AI subtitle generation.
3 Aesthetic Themes & Background Playback 🎨
Choose between spinning 'Retro Cassette', sleek 'Modern Minimal', and expressive 'Webtoon' themes. Enjoy seamless background and lock screen playback even with the screen turned off, with full headphone remote control support.
Supported Languages
Supported Languages
ko_KR한국어
en_USEnglish
ja_JP日本語
zh_CN简体中文