SubAI - Video Subtitle Helper
Offline Bilingual Subtitles
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Can't understand foreign videos?
SubAI helps you generate bilingual subtitles for local videos in seconds, making movies, online courses, interviews, tutorials, and foreign-language content easier to understand.
All processing happens locally on your device — your videos are never uploaded.
KEY FEATURES
• AI Subtitle Generation
Automatically transcribe speech into accurate subtitles.
• Multi-Language Subtitles
Support for bilingual subtitles in Chinese, English, Japanese, Korean, French, German, and more.
• Burned-In Subtitle Recognition
Extract subtitles directly from videos with embedded text.
• Fast Subtitle Burn-In
Embed subtitles directly into videos and export MP4 instantly.
• Subtitle File Export
Export subtitles in SRT, VTT, and TXT formats.
• 100% Local Processing
All processing happens on-device. Your videos never leave your phone.
USE CASES
• Watch foreign videos with bilingual subtitles
• Understand online courses and tutorials more easily
• Generate subtitles automatically for short videos
• Export professional subtitle files for editing
SUBSCRIPTION
SubAI offers auto-renewable subscriptions.
Payment will be charged to your Apple ID account at confirmation of purchase.
Subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period.
You can manage or cancel your subscription anytime in your App Store account settings after purchase.
Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription.
Subscription pricing may vary by region and plan. Current pricing is displayed inside the app before purchase.
Terms of Use:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Fixed several known issues.
• Improved overall performance and user experience.
• Enhanced subtitle extraction speed and processing efficiency.
The developer, 琦 马, 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
- 琦 马
- Size
- 159.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SubAI Lifetime $29.99
- SubAI Pro Yearly $14.99
- SubAI Pro Monthly $3.99
- Copyright
- © 2026 Charles Ma