Wrtn (뤼튼) vs Zeta (제타) by Scatter Lab vs Luzia vs Genspark
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
Wrtn (뤼튼)
Korea's free AI superapp for chat, writing and character companions
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Luzia
Free WhatsApp AI assistant for 80M+ Spanish and Portuguese users
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Genspark
AI Super Agent workspace: research, slides, docs, calls, data analysis
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| RECATOOLS Score | 6.1 / 10 | 6 / 10 | 6.4 / 10 | 7 / 10 |
| Capability | ||||
| Value for money | ||||
| Ease of use | ||||
| ASEAN readiness | ||||
| API quality | ||||
| Pricing | Freemium | Freemium | Freemium | Freemium |
| Free tier | — | — | — | 100 credits per day (reset every 24 hours); access to Sparkpages, Docs, Sheets, and Slides on the free tier with 1 GB AI Drive storage |
| Paid from | — | — | — | Free; Plus $19.99-24.99/mo (annual/monthly); Pro $249.99/mo |
| Has API | ✗ | ✗ | ✗ | ✗ |
| Open source | ✗ | ✗ | ✗ | ✗ |
| Free to use | ✓ | ✓ | ✓ | ✓ |
| Users | — | — | — | 2 million+ monthly active users (as of February 2025, at Series A) |
| Founded | — | 2011 | — | 2024 |
| Maker | — | ScatterLab | — | — |
| Verdict | Wrtn's pitch is unusual for 2026: a genuinely free, unlimited GPT-5-tier chat product, subsidized by an enterprise agent business rather than a consumer subscription. Fortune reported the company is tracking toward $100... |
Zeta's numbers are real: 5 million-plus downloads, 4.1 stars across 59,000 App Store ratings, and — per Scatter Lab's own figures — 2.5 million users averaging over 12 hours a week, more than 90% of them teens and twenty... |
Luzia's pitch is distribution, not model quality: no app install required, no account, just message a WhatsApp number and get an assistant that does homework help, translation, image generation and PDF reading. That zero... |
Genspark has ridden its April 2025 pivot from AI search to agentic workspace into real scale — roughly $250M ARR and a $2.6B valuation by mid-2026, plus a Microsoft partnership pushing its agents into Office. One prompt... |
| Full review → | Full review → | Full review → | Full review → |
Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.