Compare: Dual Subtitles & AI Translation - InterSub vs SubTrans - General Subtitle Translator Suite

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Metric	Dual Subtitles & AI Translation - InterSub	SubTrans - General Subtitle Translator Suite
User count	30,000	30,000
Average rating	4.57	3.94
Rating count	216	119
Last updated	2026-07-01	2026-04-02
Size	2.45 MB	0.65 MB
Version	4.48.0	5.0.0

Short description	InterSub delivers dual subtitles and AI translations for language learning across Netflix, YouTube, Prime Video, and more. Hover for instant word meanings and save vocabulary.	SubTrans translates and displays bilingual subtitles on YouTube, Udemy, and more. Customize styles, positions, and support multiple languages easily.
Full summary	InterSub is your language classroom in a browser. It adds dual subtitles and AI translations to videos on Netflix, YouTube, Prime Video, Crunchyroll, Coursera, and more, turning every viewing session into active language learning. Hover over subtitles for instant word meanings, lemmas, and accurate translations, with vocabulary you can save and review later. Key features include AI Language Buddy for slang and grammar help, 30+ language support, RTL optimization, and premium plans with unlimited lookups, advanced translation, and exportable vocab. Setup is quick, and you can sync vocab with AnkiDroid or export to Excel for easy study anywhere.	SubTrans - General Subtitle Translator Suite allows you to enjoy bilingual subtitles on a wide range of video platforms including YouTube, Udemy, Coursera, and many more. It translates official subtitles into nearly all widely used languages, making videos more accessible and engaging. Key features include customizable subtitle styles (font size, color, opacity, and more), support for external subtitle files, adjustable subtitle timing, and draggable subtitle positioning. SubTrans remembers your preferences for a seamless viewing experience every time. With ongoing support for additional sites and languages, it's the perfect extension for enhancing your subtitle experience across multiple platforms.