SubShifter: Sync subtitles 4+

Shift video movie subs SRT

iSolid apps

    • 4.5 • 83 Ratings
    • Free
    • Offers In-App Purchases



SubShifter adjusts your subtitles locally, on your device. No server is being used. Your data is safe. There is no data collection.

SubShifter is meant to be an incredibly simple app.
Shift or Sync your subtitles files in seconds, that's it. Don't be bored by the useless complexity of other apps.

• Support SRT files (more to come, free updates)
• Instant Shift of your subtitles
• Instant Sync of your subtitles: fix subtitles whose shift increases/decreases progressively during the movie (drifting subtitles, with optional extrapolation to the whole file)

• Compatible with Dark Mode
• Compatible with the TouchBar

• ZERO data collection: everything happens locally, on your device. Privacy is important.


Note: The free version allows you to save up to 30 minutes of synced/shifted subtitles. It is possible to have an unlimited access with the premium version of SubShifter. Premium version can be obtained in app either via a lifetime licence, a monthly subscription, or a yearly subscription. This also supports my work and all the free updates with new features to come.
The terms of use & privacy policy can be found here:

What’s New

Version 2.4

This new version:
• ensures a perfect compatibility with the brand new macOS 13 Ventura
• pre-fills the output file name with the source file name. Convenient for easily replacing the original file.

Ratings and Reviews

4.5 out of 5
83 Ratings

83 Ratings

OliverTwist78 ,

Finally a real 64-bit alternative to SubFix app

I use the SubFix app for years and love its simplicity. Unfortunately, the developer seemed to have disappeared and hadn’t updated SubFix to 64-bit version as required for running in Mojave/Catalina environment. I tried many different alternatives, and many of them were so bad, complicated, or useless. I considered buying an older secondhand MacBook with High Sierra just for the SubFix app.

I came across this SubShifter app and gave it a try. I am so happy that SubShifter is so similar to SubFix and more! I am able to sync the subtitles at two points without fuss. Thanks so much for this app! I will let my deaf and hearing friends know about this great 64-bit alternative to SubFix.

The only feature improvement would be the ability to manually type in the line number, especially at the end of film, prior to syncing. That would save the hassle of scrolling all the way down to the last dialogue. Thanks!

Developer Response ,

Thank you for this wonderful review. This is so great to read how SubShifter helps you.
I'll provide an update with your suggestion very soon. Stay tuned!
Best regards, Jonathan

Borja.M ,

Great App; Great Support

I first download this app thinking it would do something different. When I saw it was not what I was looking for, I send a message for the developer. To my surprise it was implemented in this Update. Now this up does exactly what I need. Thank you so much for the app and for the support.

Developer Response ,

Thank you for taking the time for this great review. I'm very glad that the new sync functionality satisfies you!
Thank you again!

Jake Fantom ,

New update works like a charm

Finally a superior alternative to the clunky and quixotic Subtitle Studio. The interface is much simpler and more intuitive than most other subtitle apps I have used. Great job, Subshifter team!

Developer Response ,

Thank you so much for this fantastic review, Jake. Best regards! Jonathan

App Privacy

The developer, iSolid apps, 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.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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