SubX Player Downloads & RevenueSubX Player: AI Dual Subtitles · App Store

A powerful media player that turns any video into a subtitle-based language lesson.

Watch your own videos, stream online, or cast to your TV—then use subtitles to learn naturally through real content. With built-in AI subtitle generation, even videos without subtitles become fully usable for learning.


Core Features

• AI Subtitle Generation: Generate subtitles directly on your device using Whisper and Moonshine. Choose between fast or accurate models. Works fully offline for complete privacy.

• Play Any Format: Supports nearly all video and audio formats, including MKV, MP4, MP3, and AVI.

• Subtitle Format Support: Supports SRT, WebVTT (VTT), LRC, and more, with full compatibility across video and audio playback.

• Dual Subtitles: View and compare two subtitle tracks for deeper understanding.

• Subtitle List: Browse all subtitle lines in a clean, scrollable list for easy navigation and focused study.

• Subtitle Styling: Customize font, size, color, and timing for perfect readability.

• Stream Online Videos: Stream from URLs with history, favorites, and rename options.

• Media Library: Search, sort, rename, and organize your local videos easily.

• Gesture Controls: Swipe to seek, pinch to zoom, or adjust brightness and volume.

• Background Mode: Keep listening even when the screen is off.

• Customizable UI & Settings: Personalize your playback experience fully.

• Folder Playlists: Play an entire folder with Shuffle, Repeat One, and Repeat All

• Casting Support: Cast local and online videos to your TV with full subtitle control, including dual subtitles.

• Subtitle Gestures: Resize and reposition subtitles with intuitive gestures.

• Practice Mode (YouTube): Learn with curated YouTube videos using dual subtitles, organized by level and topic.

• SubX Clip: Create short video clips from subtitle moments with burned-in text, ready for sharing.


SubX+ Premium Features

• Subtitle Translation: Translate subtitles into 130+ languages instantly.

• Seek by Subtitle: Jump between subtitle lines or repeat them for focused listening.

• Auto Pause: Automatically pause at each subtitle line for shadowing practice.

• Auto Skip: Skip silent or empty subtitle lines for smoother playback.

• Auto Repeat: Repeat subtitle lines with adjustable delay and repetitions.

• Selectable Text: Tap to copy or translate any subtitle line instantly.

• Share Subtitle Text & Audio: Share subtitle lines or extract audio clips from specific moments.

• Subtitle Editing: Edit text, fix timing, and save corrected subtitles.

• Subtitle Export: Export subtitles in SRT, VTT, TXT, or PDF formats.


Why SubX?

SubX combines a powerful media player with smart language learning tools.
Now you can generate subtitles for any video and turn it into a learning experience.

Watch, repeat, and understand real content—movies, podcasts, audiobooks, or your own files—while improving your listening and comprehension naturally.


Who SubX Is For

SubX is built for language learn