Tool that combines ebooks + aligned translations + TTS audiobooks + spaced repetition for language learners with your own books.
Platform: web
Many language-learners want to consume real books but hit friction: missing vocabulary, no audio, no built-in review loop, and—crucially—no way to do it with their own e-books. “LinguaBook Club” proposes one workspace that:
| Signal | What we saw |
|---|---|
| Hacker News | Post 45075127 discussing exactly this feature set; > 100 up-votes & constructive comments (can’t scrape but visible live). |
| /r/languagelearning threads asking for “ebook reader for language learners” and “best app with built-in translator”. | |
| Side-projects | Multiple indie posts (Duoreader, LingoReader, BookTranslator.ai) show makers trying similar angles. |
The amount of organic discussion indicates a pain point that hasn’t been completely solved.
(We need ≥ 500 searches/mo and difficulty < 30.)
| Keyword | Vol/mo | Difficulty |
|---|---|---|
| “readlang” (direct competitor search) | 1 ,900 | 10 |
| “lingq” (competitor) | 9 ,900 | 10 |
| ... |