CaptionTube

Videos + Captions + Translation - Take Your English Learning to the Next Level

CaptionTube is an app specialized in English learning that leverages YouTube video captions.

By displaying English captions and Japanese translations simultaneously with a fully synchronized highlight feature, you can improve your English skills efficiently while having fun.

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Key Features
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● Real-time Caption Synchronization
・Easy-to-read captions divided into sentences
・Auto-highlight captions based on video playback position
・Jump instantly to the corresponding scene by tapping a caption
・Word-by-word highlighting for detailed review
・Text search within captions to quickly find specific words or phrases

● Japanese Translation Feature
・Display Japanese translations of English captions with one tap (iOS 18+)

● Simple Operation
・Get captions instantly by entering a YouTube video URL or ID
・Intuitive interface that anyone can start using immediately
・Keyword search within the app
・Recommended channels feature (organized by beginner/intermediate/advanced levels)
・Playback history to quickly access previously watched videos

● YouTube Search Feature
・Display thumbnails, titles, view counts, and video duration in a list
・Play videos directly from search results
・Search history feature to quickly recall past searches

● Customizable Settings
・Adjust caption font size
・Change playback speed (0.25x to 2x)

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Recommended For
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・ Those who want to learn English enjoyably through YouTube videos
・ Those who find English captions alone difficult to understand
・ Those who want to study repeatedly at their own pace
・ Those who want to learn English from their favorite YouTubers' videos
・ Those who want to make effective use of commuting time
・ English learners of all levels, from beginner to advanced