Learning a Language Using Only Words You Know
Details
- External ID
- 46274287
- Source
- HN
- Company
- —
- Product
- Learning a Language Using Only Words You Know
- Website domain
- simedw.com
- Launched
- Dec. 15, 2025
- Cohort
- —
- Upvotes
- 84
- Upvotes percentile
- 0.8759541984732825
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
A proof-of-concept language learning app that uses LLMs to generate definitions of unknown words using only previously mastered vocabulary.
Enrichment
- Theme
- indie puzzle games and learning toys
- Vertical
- Education
- Function
- Content generation
- Audience
- B2C
- AI stance
- AI feature
- Project type
- Commercial product
- Normalized one-liner
- language learning using only known words
- Manually corrected
- False
Could you build this?
Yes This is a prompt-engineering and validation application that compares LLM output against a set of known user words using standard tokenizers or dictionary lookups.
Discussion
20 comments analyzed.
Competitors mentioned: Anki (flashcard SRS), Dreaming Spanish (comprehensible input), Language Transfer (grammar-focused courses), Koucai.chat (AI Mandarin penpals), Lingoku.ai (vocabulary expansion through reading)
Concerns raised: Generated explanations may be inaccurate or imprecise compared to dictionary definitions, Mobile experience is poor; can't upload full text files, Grammar issues with measure words and other language-specific structures, Requires manual setup of known vocabulary lists, Better suited for intermediate learners; less effective for advanced learners seeking fluency
Feature requests: Inverse product: replace ~95% of text with learner's known words, leave ~5% in English/native language, Prepared/example texts available to start reading immediately, Support for more advanced model with better context awareness (e.g., Gemini 2.5 Flash Lite), Regeneration loop for comprehensible input (N+1 approach), Add new languages beyond current offerings
Competitors
Other products that read as similar to this one — 291 launches clear the similarity bar, closest 8 shown.
Attention rank: #41 of 292 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 47 days after the earliest competitor.
- Language Model Builder (an app to learn about and build models) · hn · 2026-07-21 · 17 upvotes · similarity 0.54
- Llm-language-learning · github · 2026-09-14 · 14 upvotes · similarity 0.53
- Vocab Top · hn · 2026-08-05 · 18 upvotes · similarity 0.48
- KillSwitch · hn · 2026-09-19 · 10 upvotes · similarity 0.48
- Wondering - Duolingo for learning anything · yc · 2026-07-30 · 153 upvotes · similarity 0.48
- SilenVocab · ph · 2026-09-22 · 1 upvotes · similarity 0.47
- awesome-reasoning-generalization · github · 2026-09-10 · 143 upvotes · similarity 0.47
- notion-skills · github · 2026-09-22 · 11 upvotes · similarity 0.47
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a content generation tool for Government yet.