
AI grammar, spelling and style checker for 30+ languages
AI grammar, spelling and style checker for 30+ languages
GPT Tutor records 0 monthly visits with — month-over-month growth and Free pricing. InterSub records 71,644 monthly visits with -11.2% growth and Freemium, Free Trial pricing.

Language lessons powered by the ChatGPT API, right in your browser
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chromewebstore.google.com | intersub.cc |
| Pricing Model | Free | Freemium, Free Trial |
| Monthly Visits | 0 (0) | 71.64K (71,644) |
| MoM Traffic Delta | 0 (—) | -9.04K (-11.2%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (15.2%) |
| Direct Visits / mo | 0 | 31.96K |
| User Rating | 4.3 | 4.2 |
| Supported Platforms | Browser Extension | Website |

Language lessons powered by the ChatGPT API, right in your browser
Ask for a plain-language explanation of a word, phrase or grammar point and get an immediate answer.
Translate text between your native and target language while keeping context rather than word-for-word output.
Submit a sentence and receive corrections with notes on why the change is more natural.
Explore related words, usage examples and nuance so new terms stick in context.
Learn languages with dual subtitles and a hover dictionary in any video
Watch with the subtitle of the language you are learning and your native language stacked, one line above the other, directly inside the video player.
Hover any subtitle word and the video pauses while a pop-up shows an AI-generated definition plus a translation of the surrounding context.
Every word you look up lands in your Wordbook with its original context, so you build a personal list from scenes you actually watched.
If an episode has no subtitles in your language, InterSub translates them on the fly with AI and shows the translation as the second line.

AI grammar, spelling and style checker for 30+ languages
AI grammar, spelling and style checker for 30+ languages

Bilingual AI translation for websites, documents, video and images
Bilingual AI translation for websites, documents, video and images
Learn languages from Netflix, YouTube, and real-world texts with dual subtitles and AI
Learn languages from Netflix, YouTube, and real-world texts with dual subtitles and AI

Learn a new language by talking to lifelike AI tutors
Learn a new language by talking to lifelike AI tutors
An AI language learning assistant with bilingual subtitles, immersive translation, and vocabulary practice
An AI language learning assistant with bilingual subtitles, immersive translation, and vocabulary practice
AI dubbing and bilingual subtitles for any YouTube video
AI dubbing and bilingual subtitles for any YouTube video

Browser translation, dictionary, and AI writing assistant
Browser translation, dictionary, and AI writing assistant
Turn any webpage into bilingual reading in one click
Turn any webpage into bilingual reading in one click
Bilingual subtitles and translated pages wherever you read or watch
Bilingual subtitles and translated pages wherever you read or watch
Learn a language from the videos you already watch
Learn a language from the videos you already watch
AI language learning built into every page you read
AI language learning built into every page you read
Learn languages from real videos with word-by-word subtitles
Learn languages from real videos with word-by-word subtitles