SubStamp –Transcribe&Translate
Burn subtitles into any video
Free · Designed for iPad
Turn any video into subtitles fast. AI-enhanced transcription and translation create clean single or bilingual captions, then burn them into a new shareable export
This app turns any video into a shareable version with clean, readable subtitles permanently burned in.
Select a video, choose the spoken audio language, and generate timed captions. Optionally add a second subtitle language to create bilingual subtitles, then export a new video that plays with subtitles everywhere—no special player required.
What you can do
• Speech-to-text transcription with timestamps
• AI-enhanced transcription option to improve punctuation, readability, and phrasing (when supported on your device)
• Translate subtitles to a second language when supported on your device
• Choose translation mode: Standard (faster) or AI (slower, usually more accurate and more natural)
• Burn one or two subtitle tracks directly into the video and export a new file
• Preview, edit, and fix captions before exporting
• Copy all subtitles in one tap (full transcript with timestamps) for notes, summaries, or re-use
Designed for a smooth, guided workflow
1. Choose the audio language for transcription.
2. Subtitle 1 (required) is the transcript in the audio language and is always enabled.
3. Subtitle 2 (optional) is a translated track. The app only shows translation options available for the selected audio language, and can fall back to translating via English when a direct pair isn’t available.
4. Generate subtitles, review them, and export.
Caption editing and readability
• Edit text, timing, line breaks, and segment boundaries so subtitles match your video
• Search within captions and jump to a time range to make fast fixes
• Adjust subtitle position (bottom, lower-third), safe-area margins, and font size
• Improve contrast with background box, shadow, or outline options
• Bilingual layout controls to keep two languages easy to read (stacked lines, spacing, alignment)
• Control maximum line length and wrapping behavior for cleaner captions
• Save style presets for consistent single-language or bilingual looks across projects
Export options
• Preserve the original audio
• Choose export quality and resolution where available
• Save the finished video to Photos or share it to other apps
Clear progress and reliability
Long jobs can take time depending on video length. The app shows progress for language readiness, transcription, translation (if enabled), rendering, and export, so you always know what’s happening. You may see reminders to keep the app active during export if your device requires it. For long videos, exporting while plugged in is recommended.
App language and appearance
• Switch the app’s display language: English, Chinese, Japanese, or Korean
• Choose appearance: follow system, light, or dark
Language support and availability
Speech recognition, AI features, and translation coverage vary by device and system support. Some languages or language pairs may require downloadable on-device assets. If something isn’t ready, the app will explain what’s missing and guide you to set it up before you start a long export. Translation doesn’t support every language combination, so the available Subtitle 2 choices depend on your selected audio language.
Tips for best results
• Pick the correct audio language for clearer transcription
• Use AI translation when you care about nuance; use standard translation when you want speed
• After generating captions, do a quick pass to fix names, places, and technical terms
• For bilingual subtitles, keep each line short and enable the background box for readability
Privacy
Your videos stay on your device. The app processes media locally and only requests permissions needed for features like saving to Photos. No account required.
Use cases
• Add captions for social posts and short videos
• Create bilingual subtitles for family, friends, or classmates
• Make videos easier to understand in noisy places or for accessibility
• Prepare demos, tutorials, and walkthroughs with permanent subtitles
• Turn lectures or meetings into readable subtitles you can replay anywhere
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
Redesigned Workflow
Streamlined 4-step process gives you more control over when to transcribe, translate, and export your videos.
Enhanced Translation
Edit your transcriptions before translating to ensure accuracy. After translation, you can edit individual subtitle cues and retranslate just those specific cues without redoing the entire batch.
Improved Editing
Original transcription is now preserved throughout the workflow, making it easier to make corrections and adjustments at any stage.
Better Localization
Complete interface translations for English, Japanese, Korean, and Simplified Chinese.
Smoother Experience
Auto-navigation between workflow steps and improved visual feedback during processing.
The developer, Lisen Huang, 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
- Provider
- Lisen Huang
- Size
- 2.5 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- Languages
English and 3 more
- English, Japanese, Korean, Simplified Chinese
- Age Rating
4+
- 4+
- Copyright
- © Lisen Huang