About LangHub

Built by a language learner, for language learners.

LangHub isn't a big company. It's one learner who got tired of pausing shows to retype words into a dictionary — and decided the tools should be better.

The story

It started with a show too good to watch dubbed

Somewhere around episode three, I realized I was spending more time pausing than watching. Every scene had a word worth keeping — and nowhere good to put it. I'd freeze the frame, retype the word into a dictionary tab, lose the sentence it lived in, and forget all of it by the weekend. I kept a notebook by the couch. Then a spreadsheet. Then six browser tabs that each did a quarter of the job.

So I built the missing piece: subtitles you can touch. Hover a word and the meaning is just there; tap it and it's saved, with the exact sentence it came from. Then the saved words needed reviewing, so flashcards. The flashcards needed context, so fill-in-the-blank practice. Practice needed a voice, so the tutor. Every tool in LangHub exists because I hit a wall in my own learning and wanted a way through it.

That's still how it works today. LangHub isn't a growth team with a language-learning product — it's a language learner with a code editor. I'm the first user of every feature, and the rule hasn't changed: if it doesn't survive my own study sessions, it doesn't ship.

👋 Gavinbuilder — and still very much a learner

How we build

Three promises, kept in the code

🎯

Learner-first, always

Features come from real study sessions, not strategy decks. If something doesn't help you understand tonight's episode — or remember it next week — it doesn't get built.

📺

Real language, not textbook language

You learn words inside the sentences you met them in — the slang, the speed, the culture. Input you actually care about is the input that sticks.

🤝

Small by design

No ads, no data selling, no dark patterns. Your words live in your browser unless you choose to sync them — and if you email us, the person who wrote the code answers.

Our pledge

10% of revenue goes to keeping languages alive

LangHub exists because languages are worth learning. All of them.

Most languages aren't Netflix languages.

Every LangHub subscription helps someone learn a big language — Spanish, Japanese, French. But most of the world's languages aren't big. Of the 7,000+ spoken today, nearly half are at risk of disappearing within a century. When a language falls silent, its stories, songs, jokes, and ways of seeing the world go with it.

So conservation is part of the business, not an afterthought: 10% of LangHub's revenue — revenue, not profit — is pledged to organizations that document endangered languages, archive them, and teach them to new generations of speakers.

🕊️ Endangered Language Fund 🌍 Wikitongues 🎙️ Living Tongues Institute 📚 7000 Languages

The kind of work the pledge supports. As donations go out, we'll list exactly where the money went — right here on this page.

Study one language. Help the rest survive.

Every word you save makes LangHub better — and every subscription funds the people keeping endangered languages alive.

Open the web app → ＋ Add to Chrome — free

Questions, ideas, or an organization we should support? Email [email protected] — it lands with the person who wrote the code.