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I speak 5 languages. Common apps taught me none. So I built lairner

Details

External ID
47003596
Source
HN
Company
—
Product
I speak 5 languages. Common apps taught me none. So I built lairner
Website domain
lairner.com
Launched
Feb. 13, 2026
Cohort
—
Upvotes
35
Upvotes percentile
0.7634770889487871
Tags
—
Fetched at
Sept. 7, 2026, 9:25 p.m.
Updated at
Sept. 7, 2026, 9:25 p.m.

Description

I'm Tim. I speak German, English, French, Turkish, and Chinese.I learned Turkish with lairner itself -- after I built it. That's the best proof I can give you that this thing actually works.The other four I learned the hard way: talking to people, making mistakes, reading things I actually cared about, and being surrounded by the language until my brain gave in. Every language app I tried got the same thing wrong: they teach you to pass exercises, not to speak. You finish a lesson, you get your dopamine hit, you maintain your streak, and six months later you still can't order food in the language you've been "learning."So I built something different. lairner has 700+ courses across 70+ languages, including ones that Duolingo will never touch because there's no profit in it. Endangered languages. Minority languages. A Turkish speaker can learn Basque. A Chinese speaker can learn Welsh. Most platforms only let you learn from English. lairner lets you learn from whatever you already speak.We work together with some institutes of endangered languages to be able to teach them on our platform.It's a side project. I work a full-time dev job and build this in evenings and weekends. Tens of Thousands of users so far, no ad spend, no funding.I'm not going to pretend this replaces living in a country or having a conversation partner. But I wanted something that at least tries to teach you the language instead of teaching you to play a language-themed game.Happy to answer anything.

Enrichment

Theme
indie hacker passion projects
Vertical
Education
Function
Vertical SaaS
Audience
B2C
AI stance
AI feature
Project type
Commercial product
Normalized one-liner
language learning app
Manually corrected
False

Could you build this?

Partial The web app interface, flashcards, spaced repetition algorithms, and audio playback are straightforward to build with AI assistance, but curating 700+ verified courses across 70+ languages (especially endangered/rare languages) requires immense linguistic domain data and validation.

What it would actually take: The frontend can be built using Next.js/React and Tailwind CSS with a standard PostgreSQL database storing flashcards, lessons, and user progression schedules (SuperMemo-2 or FSRS algorithms). The difficult challenge is content generation and verification for rare languages (like Laz), where LLMs hallucinate grammar rules and vocabulary without native speaker review and curated parallel corpora. Production implementation requires establishing rigorous pipeline checks with linguistic datasets and professional native-speaker curation.

Discussion

20 comments analyzed.

Competitors mentioned: Italki and Preply (personal tutors), YouTube channels for language instruction, Lang-8 (penpal language exchange), Other language learning apps with more language pairs

Concerns raised: AI explanations failing to load or not working for phrases, Course quality issues - mistakes in demo questions, LLM-generated content is problematic, Bugs in first lessons (e.g., Bonjour translation pairs, placement test accuracy), Not all 700+ courses actually tested end-to-end by expert humans, Missing language combinations despite '700+ courses' claim - not every language pair available

Feature requests: Add Esperanto as learnable language and language of origin, Enable learning any language from any other language (not just English/German as base), Remove language-to-flag mapping and better handle multilingual regions (Basque, etc.), Implement community correction features for sentences (similar to Lang-8), Improve AI explanation fallback with dictionary definitions when calls fail

Competitors

Other products that read as similar to this one — 177 launches clear the similarity bar, closest 8 shown.

Attention rank: #43 of 178 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 107 days after the earliest competitor.

Other launches for this product

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