Twinsubs
Immersive Translate alternative for Mac: bilingual subtitles made on your own Mac
Immersive Translate is a browser extension whose strength is putting bilingual subtitles on more than 60 online video platforms as you watch. Twinsubs is a Mac app that turns video and audio files on your disk into bilingual SRT files on your own Mac, and also translates the sound playing on your computer. If you mostly watch and translate things in the browser, Immersive Translate fits; if you have files, do not want to upload them, and prefer a one-time purchase, Twinsubs fits.
Where they differ
| Item | Twinsubs | Immersive Translate |
|---|---|---|
| Form | Mac app (on the Mac App Store) | Browser extension (Chrome, Edge, Safari, Firefox) plus a web app |
| Where it runs | On your Mac, nothing uploaded | Translation requests go through its service; whether a video file is uploaded: not verified |
| Price | Free for the first 10 minutes of each video and 10 minutes of live translation per day; one-time purchase removes the limits | Free users and a Pro plan; free users have a daily request limit, Pro price: not verified |
| Bilingual subtitles | Yes, translation above the original (order can be swapped) | Yes |
| Live translation | Yes, the sound playing on your Mac; works offline once the language packs are downloaded | Yes, in the extension, on online video platforms |
| Export SRT | Yes, a bilingual file and a target-only file | Yes, the page says bilingual files can be exported as SRT or ASS |
“Not verified” means the official page has no clear statement, or the answer sits in dynamic content we could not read; it does not mean the feature is missing. We did not sign up for any account or try any paid feature.
When to choose Immersive Translate
- You watch a lot of online video. The extension page says it covers more than 60 video platforms with real-time bilingual subtitles and AI-generated subtitles for videos that have none, with no need to download the video first.
- You want one tool for web pages, PDFs and video subtitles. Its core is bilingual page translation, and video subtitles are one of its features.
- You want to edit the subtitles in the page before exporting. The page says subtitles are editable and can be exported as SRT or ASS bilingual files.
When to choose Twinsubs
- The video is already on your disk. Drop it into Twinsubs and it is recognized and translated on your Mac with nothing uploaded; the web version of Immersive Translate works from a pasted video link.
- You prefer to pay once. Twinsubs is a one-time purchase; Immersive Translate has a free allowance and a Pro plan.
- You want to translate sound from any app on your Mac, not only a video playing in the browser.
Limits of Twinsubs, stated up front
- System requirement: macOS 26 or later, Apple silicon.
- It outputs SRT only: no subtitle burn-in, no built-in editor, no speaker separation, no ASS, and it cannot import an existing SRT and translate it.
- Machine recognition and translation make mistakes; with heavy accents, loud music or many specialist terms, check the result against the video.
- Which language pairs work depends on Apple's on-device translation; there are 12 source languages and 20 target languages.
Moving from Immersive Translate
The subtitle formats are interchangeable. If you already exported an SRT from Immersive Translate you do not need to redo it: import it into CapCut, Final Cut Pro or IINA as it is (see the SRT import guide). To switch to on-device subtitles, drop the same video into Twinsubs and you get a bilingual SRT named video.target-source.srt plus a target-only file next to the video. The wording of the two translations will differ, and subtitles you have already proofread do not need replacing.
A few notes
The price of Immersive Translate's Pro plan and several FAQ answers on its pages are dynamic content that we could not read, so the price cell says not verified; check the official page for today's number. The 30 million users figure on its pricing page is the vendor's own claim, not something we verified.
How to check this yourself
- Read the other product's pricing pagePrices, plans and free allowances change; trust the page on the day you buy.
- Run the same clip through bothPick a clip with an accent and some technical terms; it tells you more than a spec sheet. The free version of Twinsubs covers the first 10 minutes of each video.
- Check the export formatConfirm you can export SRT and that your usual editor imports it without errors.
- Check where the data goesRead the other product's privacy policy to see whether video or audio is uploaded. Ours is the privacy policy.
Sources (verified 2026-10-16)
- Immersive Translate video subtitles page · 2026-10-16
- Immersive Translate pricing page · 2026-10-16
“Not verified” means the official page has no clear statement, or the answer sits in dynamic content we could not read; it does not mean the feature is missing. We did not sign up for any account or try any paid feature.
FAQ
Is Immersive Translate free?
Its pricing page says free users can use it, with a daily limit on translation requests that is higher after signing up. The Pro price is dynamic content we could not read, so please check the official page.
How long does Immersive Translate take to process a video?
Its video subtitles page says a 5-minute video takes about 30 seconds, with one extra minute for every additional 10 minutes of video, and that videos longer than 4 hours are not supported. On our development Mac, one 10-minute English clip produced a complete SRT in about 55 seconds (measured 2026-10-09; your Mac and your video will differ).
How reliable is the information on this page?
Every fact carries an official source and a verification date (2026-10-16), and anything we could not find is marked not verified. Prices and features change, so check the other product's own site before you buy; if you spot a mistake, write to twinsub@gatheon.com and we will correct it after checking.
Updated 2026-10-23. Back to the Twinsubs home page