3 Tools for Learning a Second Language on YouTube

YouTube videos are a perfect source for learning a second language. There are so many lectures, lessons, tutorials, and just podcasts on various topics that you have no chance of not learning. Or... is there still a chance of failing? There actually is, if you don’t approach the learning process as a system. We won’t be too harsh and call it an actual ‘failure’, but, you know... an unused opportunity.

So we gathered three tools to help you learn the language from YouTube videos efficiently and organize a workflow where each step complements the others.

1. Clarify AI: YouTube Summaries & Transcript

Clarify AI is a Chrome extension that summarises YouTube videos with timestamps, transcripts, translation, AI chat and more. It generates a concise summary from any video, lets you copy transcripts, jump to important moments with timestamps, and translate results into 50+ languages. It's also a web app now, where you can create your personal feed of videos and learn systematically.

Other functionality for learning:

• Summarises videos up to 3 hours long

• Clickable timestamps take you straight to the part you need

• Ask questions and follow-ups with the help of AI assistant.

• Use custom prompt templates to personalize the outcomes.

• Adjust summary length and tone.

• Summarise comments and more.

• Save essential parts in the bookmarks.

Pricing: free plan is available with limits, and paid plans are divided into Basic ($2.99/month) and Pro ($4.99/month), offering flexibility in unlocking features. The Pro plan also gives free access to another learning tool - Screen Answers (same account, one login). A free trial is also available.

2. Linglass - Dual Subtitles With Learning Toolset

Dual subtitles tools display two subtitle lines on screen at the same time: the video's original language on top and a translation into your own language below. Linglass offer both web and mobile apps together with a browser extension. You can start with the easiest option: install the extension, pick your two languages once, and go on.

Other functionality:

• Contextual translation: Click any word to see what it means in this specific scene, plus dictionary meanings and pronunciation.

• Grammar breakdown: One tap explains the constructions and tenses in a line.

• Flashcards: Saved words become spaced-repetition cards with their sentence.

• Readings above words: Furigana, pinyin, romaji, romaja, and Thai transliteration shown over the text.

• Viewing modes: Pause after each line, repeat it slower, or listen first with the text hidden.

• Word highlighting: Words you saved or translated stand out in the subtitles as you watch.

• Subtitle download: Save both subtitle lines of a YouTube video as an SRT, VTT, or TXT file.

• Also works on Netflix, HBO Max, Disney+, Crunchyroll, iQIYI, and Viki.

Pricing: A free plan with limits is available. Premium removes all the limits for $7.99/month or $69.99 a year (about $5.83 a month), and covers the extension, the app, and the web. A 3-day free trial is also provided.

3. Language Reactor - Dual Subtitles With Learning Toolset

Language Reactor is both a web app and a Chrome extension that turns watching films, series, and online videos into an effective language-learning tool. Like Linglass, it works both on YouTube and Netflix and offers extra features to work on vocabulary:

Other functionality for learning:

• Popup dictionary: clicking an unfamiliar word gives an instant definition, so you can build vocabulary in context, where words are easier to remember.

• Precise playback controls: replaying a single line as many times as you need trains your ear to catch fast speech, slang, and pronunciation details.

• Text import for books and websites: machine translation helps you follow longer texts, while realistic text-to-speech lets you hear how written words sound, linking reading with listening.

• Saving words and phrases: Free users can save only through PhrasePump, while Pro lets you save across all features and tailor your study to your vocabulary gaps. Saved words are highlighted throughout the extension and can be exported to Anki.

• Lexa AI dictionary: The free tier has a basic AI helper, and Pro uses a stronger model with broader knowledge that handles complex queries better.
  

Pricing: The company also follows the Freemium model and provides both limited free, and a paid plan (from $6/month).

Cool, how to actually use them on YouTube?

Just follow the simple scheme (you can do it for free):

1. Watch: Play the video with dual subtitles from Linglass or Language Reactor and try your best to understand the material.

2. Summarize: Summarize the video with Clarify AI to check the level of your undestanding.

3. Create a glossary. Ask Clarify AI to generate a glossary of key terms for you and export it in an available formats for future printing.

1. Practice: Use Language Reactor’s or Linglass' popup dictionary and line-by-line replay to work on difficult moments.

2. Review: Return to the Clarify AI glossary to revise what you learned.

If you want more, explore the extended features the tools offer and choose the plans that meet your specific needs.

Conclusion

All in all, the perfect way to learn a second language on YouTube is to combine a Clarify AI YouTube Summarizer with one of the dual-subtitles learning tools (Linglass or Language Reactor). Which one to choose? Some features are the same in both, right, but some do differ. So prioritise and don't hesitate to try. All three have free plans!

*All information in this listing is accurate as of November 2026, check each tool's website for current details.