LingoBound
AIAI book translation for whole EPUB, PDF, DOCX and TXT manuscripts, with a shared glossary and side-by-side review. $2.99 per book after a free chapter.
Best for: Authors on a tight budget who want a cheap AI first-draft translation of a full manuscript or EPUB to test a language market, with human review before publishing
Cheaper than 2 of 16 tools · periods vary
Tools at this price point typically fit a Professional Stack ($2,000+ total).
Details
- Service Type
- Ai Translation
- Target Languages
- Spanish, German, French, Italian, Portuguese, Dutch, Polish, Russian, Japanese, Korean, Chinese Simplified, Chinese Traditional, Arabic, Hindi, Swedish, Turkish, Indonesian, Ukrainian, Vietnamese, Other European, Other Asian, Other
- Business Model
- Per Book, Subscription, Freemium
Strengths
- Very low cost: One price covers a whole novel; BookTranslator.ai charges $6.99–$9.99 per 100,000 words.
- Try before you pay: A full free chapter, plus a free shelf of 18 public-domain classics in 12 languages to judge output on known books.
Limitations
- Brand new, no track record: The domain was registered in August 2026. Searches found no independent reviews or author-community discussion.
- Operator unknown: The terms and privacy policy name no company, address or country, and the terms say nothing about refunds.
- Undisclosed AI model and data handling: Text goes to an unnamed "translation service"; the privacy policy doesn't say whether manuscripts can train AI models.
- Translations expire: Jobs are kept up to seven days; download promptly.
- Not built only for authors: The annual plan is labelled "For regular readers"; the site targets readers as much as authors.
LingoBound is a browser-based AI book translator that splits a whole manuscript into chapters and translates them in order, carrying one glossary of names and terms through the book. The draw for indie authors is price: $2.99 for a book of up to 300,000 words. The catch is that it launched in August 2026 and nobody outside the company has reviewed its output yet.
What You Get
- Chapter queue with a shared glossary: Character names, places and recurring terms stay consistent across chapters, and a job can be paused and resumed.
- Manuscript brief: The site says it analyses characters, setting and tone first and gives that summary to every chapter.
- Two quality modes: Standard gives a fast first draft. Pro adds an accuracy review against the source and flags possible problems for you to check. The app says Pro doesn't rewrite the draft, but the site's manuscript page still describes a "rewrite pass", so it's unclear which is current.
- Side-by-side review: Source and translation appear chapter by chapter, with automatic check notes, before export.
- Formats: Upload EPUB, PDF, DOCX or TXT (up to 20 MB, 300,000 words, 600 pages for PDF/DOCX) or page images read by OCR. Export as EPUB, PDF or TXT.
- 31 languages: The language menu covers major European and Asian languages, Arabic, Hindi, Hebrew and English.
Who It's For
- Authors testing a new language: A cheap rough draft to show a bilingual reader, translator or foreign-rights contact.
- Authors who will pay for human editing: The site itself says human review is needed before publication.
Pricing: Signing in with Google or email gets you one free sample chapter (up to 5,000 source words). After that, it's $2.99 per book with no subscription. Plans are $19.99/month for 10 books, $29.99/quarter for 20, or $69.99/year for 60. Extra books beyond a plan cost $1.99 each. Payment is by Stripe in USD. The site doesn't say whether Pro mode costs more.
Strengths
- Very low cost: One price covers a whole novel; BookTranslator.ai charges $6.99–$9.99 per 100,000 words.
- Try before you pay: A full free chapter, plus a free shelf of 18 public-domain classics in 12 languages to judge output on known books.
Limitations
- Brand new, no track record: The domain was registered in August 2026. Searches found no independent reviews or author-community discussion.
- Operator unknown: The terms and privacy policy name no company, address or country, and the terms say nothing about refunds.
- Undisclosed AI model and data handling: Text goes to an unnamed "translation service"; the privacy policy doesn't say whether manuscripts can train AI models.
- Translations expire: Jobs are kept up to seven days; download promptly.
- Not built only for authors: The annual plan is labelled "For regular readers"; the site targets readers as much as authors.
Alternatives
ScribeShadow offers similar chapter workflows and glossaries with a longer indie-author track record, at higher subscription prices. BookTranslator.ai is EPUB-only and priced by word count, with a 7-day defect refund. For publication-ready work, hire through Reedsy's translators.
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