OpenCaptions: Auto Captions
Private, on-device subtitles
Free · In‑App Purchases
Animated captions for your videos, made on your phone. Nothing is uploaded. Pay once for Pro, no subscription.
Add animated captions to any video in a minute, and keep it private: OpenCaptions listens to your video on your iPhone, writes the words with their timing, and never sends it anywhere.
WHAT YOU GET
• Automatic captions in about 100 languages, made on your phone with Whisper
• Word-by-word highlighting, with styles from clean and quiet to loud and bold
• Your fonts: pick from the Google Fonts library
• A timeline to fix a word, move a caption or retime it
• Drag and pinch to place and size the captions right in the preview
• Save as H.264 or HEVC, with the size and frame rate you choose
• HDR videos stay HDR
PRIVATE BY DESIGN
No account. No analytics. No cloud. Your videos stay on your device. If you run your own OpenCaptions server, the app can send audio there instead, but only if you set it up.
FREE, AND PRO WHEN YOU WANT MORE
The free app has everything you need to caption a video and save it up to 1080p at 30 fps, with a small mark in the corner. Pro is a single purchase, with no subscription ever: it removes the mark and adds 4K, 60 fps, HDR, and every caption style.
OPEN SOURCE
OpenCaptions is open source (AGPL-3.0). Read the code, build it yourself, or host the web version with Docker: github.com/leogaudin/opencaptions
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Open a video straight from Files or another app, and use the new Caption a Video action in Shortcuts. Plus fixes.
The developer, Leo Gaudin, 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
- Leo Gaudin
- Size
- 24.9 MB
- Category
- Photo & Video
- 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 12 more
- English, French, German, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- OpenCaptions Pro $12.99
- Copyright
- © Léo Gaudin
