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WritingFree tier

Hypotenuse AI

Mainland China: not confirmed

English

E-commerce and SEO content generator for product copy and blogs, freemium and paid.

中文

面向电商与 SEO 的产品文案与博客生成器，有免费与付费。

Marked “not confirmed” because NavBoth only checked public pages and did not verify access from mainland China.

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WritingFree tier
Grammarly
Writing assistant for grammar, tone, and rewrites, aimed mainly at English, with free checks and paid plans.
Mainland China: not confirmed
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WritingPaid
Jasper
Marketing-copy product for campaigns and brand voice. Jasper sells it on paid plans.
Mainland China: not confirmed
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WritingFree tier
Perplexity Pages
Perplexity's tool for turning research into shareable article-style pages with citations.
Mainland China: not confirmed
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