Huoshan Xiezuo 火山写作 (Writingo)
Free ByteDance tool for Chinese/English grammar and polish
Overview
Huoshan Xiezuo (Writingo), from ByteDance's Volcano Engine, is a free browser-based writing assistant that corrects, rewrites, and polishes Chinese and English text in real time, with tone-adjusted English polish and templates for social posts, livestream scripts, and event copy.
Pricing
Pricing shown for reference only. These figures reflect RECATOOLS research as of 12 Jul 2026 and may be out of date or incomplete. This is not financial or purchasing advice — always confirm the current price on the provider’s official website before making any decision.
What you can produce with Huoshan Xiezuo 火山写作 (Writingo)
- Real-time grammar/spelling correction for Chinese and English
- Four English tone-polish styles (general/formal/polite/casual)
- Paraphrase and rewrite suggestions
- Chrome and Edge browser extension
- Free web app, no paywall on core features
- Templates for social posts, livestream scripts, event copy
ASEAN Perspective
Huoshan Xiezuo 火山写作 (Writingo) in Southeast Asia
ASEAN-region availability and pricing notes coming soon. Drop the editorial team a note via /contact/ if you can supply local context (Singapore/Malaysia/Indonesia/Thailand/Vietnam).
Writingo does one thing and doesn't ask for a credit card: real-time grammar and polish for Chinese and English, plus rewrite/paraphrase options and English tone presets (general, formal, polite, casual). It's positioned as ByteDance's answer to Grammarly, and for typo-catching and sentence-level polish it holds up, especially for ESL users who want quick, no-friction correction. It's narrower than a full writing suite — no long-form drafting engine, no public API, and its marketing, help docs, and templates are built Chinese-first even though the tool itself handles English text fine. Available as a web app and a Chrome/Edge extension, though the extension's own usage numbers are small next to the web version. If you mainly need correction and rewriting rather than generation, and don't want to pay, it's a reasonable pick; anyone needing brand-voice control or workflow integration will outgrow it fast.
What people say
Writingo (火山写作) comes from Beijing Volcano Engine Technology Co., Ltd. — the same ByteDance unit behind Doubao and the wider Volcano Engine AI stack — and ships as a web app plus a Chrome/Edge extension. Chrome-stats data on the extension puts weekly active users at only around 704, a small number for a ByteDance-backed product, suggesting most usage happens through the web app rather than the browser add-on.
Feature-wise, Zhihu writeups describe a pipeline that goes beyond simple correction: text generation, topic deep-dive, content polish, and full-document optimization. For Chinese input it flags typos; for English it runs spelling, grammar, and four tone-adjusted polish styles (general, formal, polite, casual), plus a paraphrase/rewrite option. Reviewers on Zhihu who use it for long-form writing — essay drafts, social content — describe it as genuinely useful for smoothing paragraphs and surfacing alternate phrasing once a draft already exists, rather than as a first-draft generator.
Access is free with no paywall on the core correction, rewrite, and polish features, which several Chinese reviews call out as unusually generous compared with competitors that gate advanced polish behind a subscription. Publicly available detail on any paid tier is thin, though — search results reference a subscription option for "advanced" features and priority support but don't specify prices, and the company doesn't publish a rate card.
Where it falls short: there's no public API, so it can't be wired into another workflow the way Grammarly's API or LanguageTool can. It's also clearly built and marketed for a Chinese audience first — English support works, but the interface, help docs, and template library (Xiaohongshu posts, livestream scripts, event copy) assume a Chinese-language user base. For anyone who mainly needs Grammarly-style correction for Chinese and English without paying, and doesn't need integration or heavy customization, it's a solid free pick from a company with the resources to keep it maintained.
Summary of public user & expert reviews, compiled by RECATOOLS.
About this listing
This entry was compiled from publicly available data including Huoshan Xiezuo 火山写作 (Writingo)'s official website, press releases, documentation, and reputable third-party publications. RECATOOLS is not affiliated with Huoshan Xiezuo 火山写作 (Writingo) unless explicitly stated.
Third-party AI tools update their pricing, features, availability, and policies frequently. Information here may be outdated by the time you read this — we make reasonable efforts to keep listings current, but cannot guarantee absolute accuracy.
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