Inject subtitle tracks, chapter markers and metadata into your movies and TV-shows. The perfect companion app for your iTunes library and all your Apple devices, like the iPhone, iPad, iPod, Apple TV and Mac.

iSubtitle takes full advantage of Apple's soft subtitle technology. The subtitle tracks are resolution independent and rendered in real-time as you watch the movie. Subtitles are always displayed at the best quality your device can perform. There are support for multiple languages in the same movie file and you can even switch language on the fly as you watch. The export and metadata tagging is fully automated so you don't need to tweak a lot of parameters to get your movie into iTunes with beautiful tagging and artwork.

Main Features

- Add soft, non-destructive subtitle tracks, that won't change or alter the original movie.
- Subtitles can be turned on/off using the interface of the device or application.
- Complete support for multiple languages in the same file.
- Perfect integration with your iTunes library or the TV app on macOS Catalina.
- Supports all Apple devices like the iPod, iPhone, iPad, Apple TV and Mac.
- Supports encoding in AVC, aka H.264 and HEVC, aka H.265.
- Supports pass through for H.264 and H.265 video tracks and AC3 and AAC audio tracks, ie no encoding needed = fast!
- Supports all major subtitle file formats like SubRip (.srt), SubViewer 1 & 2 (.sub), SubStation Alpha (.ssa/.ass), Spruce (.stl), iTunes Timed Text (.itt) and WebVTT (.vtt).
- Matroska subtitles, like ssa/ass and srt, are automatically converted to soft subtitle tracks on import.
- Sync individual subtitle tracks in real-time using the time offset stepper.
- Automatic and manual metadata tagging.
- Create chapter markers automatically or manually.
- Batch re-encode movies within the application to support your target device or application.
- Smart export will only re-encode your movie if really needed for it to play on your device.
- Save inline directly to the source file if it's already in a compatible mp4/m4v format.
- Watch subtitled movies in fullscreen without leaving the application.
- Works like a charm with Catalina, Mojave, High Sierra and Sierra.

• Please use the Feedback feature in the app if you are having issues and I will get back to you!

NOTE! iSubtitle cannot add subtitles to movies or tv-shows purchased or rented in the iTunes store due to DRM protection.
NOTE! iSubtitle is not a subtitle file authoring application.

What’s New

Version 3.3.1

- Support for macOS Catalina and the new TV app replacing iTunes.
- Automatically add the exported file to the TV app on finished export instead of iTunes.
- Poster images on macOS Catalina are in landscape instead of portrait to fit the look of the new TV app.
- [BUGFIX] Should now be able to add movies to the TV app automatically.

Ratings and Reviews

4.3 out of 5
21 Ratings

21 Ratings

DavidPabian ,


Because I have hearing-impared friends who like obscure films, I do a lot of subtitle downloading and always-necessary repair in both timing and, too often, translation or just plain misunderstood words. I’ve used several subtitle apps, including “professional” ones, but always come back to iSubtitle. Version 3 is sleek and elegant, has excellent export capabilities and is simple and user-friendly. The only caveat is that instead of the earlier version’s manual Search for subtitles the only choice is Submarine, and too many times that app hasn’t found titles that a manual hunt would uncover.

But back to the pluses - when I had a minor problem with this version, the developer found it, fixed it, updated and uploaded the app within a day. That’s what clinched the final star.

Developer Response ,

Thank yo so much David for your nice review! So glad to hear that you enjoy my app that I put so much time and energy into. Makes me motivated to continue updating it and keeping it fresh. Thx 🙏

Samad74 ,

Thanks for quick response at support

Audio selection fixed at betta version, hope this app become a multi purpose media convertor.

Developer Response ,

Thx a bunch! Happy to hear that the beta solved your issues. Version 3.2.1 will soon be available here in the store. Stay tuned!

coachdport ,

Crashes when Saving

Very disappointed. I am adding subtitles to an m4v file. I get the subtitle timed out correctly, update the metadata, add the poster that I like, and click “Save” and the app crashes. It has done this multiple times with multiple movies. I had an older version of this app that worked fine, but wanted to support the app so I bought the new version. Now it won’t work. Please fix this issue.

Developer Response ,

It would be great if you could send me a crash report and contact me at


Bitfield AB
25.2 MB

macOS 10.12 or later, 64-bit processor


English, Dutch, French, German, Greek, Polish, Portuguese, Simplified Chinese, Spanish, Swedish, Turkish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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