| What it does | AI humanizer for multilingual writing with best-in-class Japanese support
| Clean rap writing and line editing tool
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| Stage | Startup
| MVP
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| Founded | 2026
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| Based in | HK
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| Pricing model | Freemium
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| Pricing | Free: 500 words/day humanize + unlimited detector (no credit card required); Basic: $9.99/month for 50,000 words/month + 30-day history + priority email support; Pro: $19.99/month for 250,000 words/month + academic mode + 90-day history + priority API queue. Student discount: 50% off annual plans wi
| Free Starter: one project with one AI draft, three line rewrites, text analysis, and one export, saved for 7 days. 5-Project Pack: $5 USD, one-time purchase with five additional projects, five AI drafts, fifty shared line rewrites, and repeat exports, each project saved for 90 days.
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| Key features | - AI text humanizer with casual, academic, and business modes
- Free AI content detector with ai_score, perplexity, and burstiness metrics
- Morphology-aware Japanese rewriting with conjugation and particle control
- Citation and technical term preservation in academic mode
- Three parallel rewrites scored by separate detector model
- Five-step intensity slider for faithfulness vs. AI-fingerprint tradeoff
- History and re-rewrite capability (30 or 90 days depending on plan)
- Second-pass academic polish with Claude 3.5 Haiku on Pro plan
- Support for English, Japanese, Korean, German, French, Spanish, Portuguese, and Chinese
- Tested against GPTZero, Turnitin, Originality.ai, and Copyleaks
| - AI rap draft generation from topic descriptions
- Paste and analyze your own lyrics without rewriting
- Text-based syllable and line density estimation
- End rhyme and internal rhyme pattern detection
- Common AI cliché and banned phrase detection
- Single-line rewrite with constraint options
- Lock lines to protect them during rewrites
- Export plain text or section-labeled structured lyrics
- Organization into Verse, Hook, Bridge, and other sections
- Rewrite constraints including meaning, rhyme, syllables, and point of view
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| What makes it different | - Best-in-class Japanese support with morphology-aware morpheme-level tuning, unlike generic humanizers
- Separate AI detector scores rewrites to guarantee the most natural result
- Preserves academic citations, figures, tables, and technical terminology verbatim
- Five-step granular intensity control to trade off faithfulness versus AI-fingerprint removal
- Independent developer with transparent privacy: no model training on user text, fixed deletion schedule
| - Designed for artistic control with line-by-line editing instead of full-section rewrites
- Clean, brand-safe content focus for rap lyrics
- Text estimates clearly labeled and never claimed as definitive
- Structured export compatible with Suno and Udio workflows
- One-time pricing with no subscription or automatic renewal
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ● no change since last check | 6 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 11 | 0 |
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| Citation Flow (Majestic) | 14 | 0 |
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| Referring domains (Majestic) | 46 | 0 |
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Suikou AI
RhymeFrame