Grammarly 记录了 58,867,412 月访问量，月度环比增长为 -1.5%，定价为免费增值。Validoe 记录了 6,165 月访问量，增长率为 -31.3%，定价为付费。
提供实时语法纠错、语气校准、写作来源追踪与团队风格指南的跨平台 AI 写作助手。
Validoe is an app that authenticates and pre-grades Pokemon cards, and reviews graded slabs and sealed product, by combining a global team of card specialists with AI assistance. You photograph the item, submit it for verification, and receive a report covering authenticity, grade potential and any signs of tampering - often within minutes.
| 维度 / 指标 | | |
|---|---|---|
| 官方域名 | grammarly.com | validoe.com |
| 定价模式 | 免费增值 | 付费 |
| 月访问量 | 5886.74万 (58,867,412) | 6165 (6,165) |
| 月度环比流量变化 | -91.61万 (-1.5%) |
| -2812 (-31.3%) |
| 主要市场与份额 | 🇺🇸 美国 (51.9%) | 🇺🇸 美国 (96.1%) |
|---|
| 直接访问 / 月 | 2539.87万 | 2454 |
|---|
| 用户评分 | 4.4 | 3.9 |
|---|
| 支持的平台 | 网站 | 网站 |
|---|
提供实时语法纠错、语气校准、写作来源追踪与团队风格指南的跨平台 AI 写作助手。
在 Chrome、Safari、Firefox、Edge、Windows、Mac、Google Docs、MS Office 与移动键盘中原生运行，标出语法错误、重写绕口句子，并将语气转向自信、共情或高管口吻。
部署具上下文感知的 AI 智能体，预测目标受众会如何反应草稿、定位可信的支撑引文、按评分标准批改文章，并在 Pro 方案下每月使用最多 2,000 次提示生成草稿。
对照数十亿网页与学术数据库扫描文本以发现无意抄袭，识别 AI 生成的段落，并通过 Google Docs 与 Word 中的 Authorship 报告透明记录文档来源。
让 Pro 与 Enterprise 方案的团队能够固化公司术语、禁用过时行话、强制使用包容性语言、插入共享片段，并在行内显示公司内部定义。
Validoe is an app that authenticates and pre-grades Pokemon cards, and reviews graded slabs and sealed product, by combining a global team of card specialists with AI assistance. You photograph the item, submit it for verification, and receive a report covering authenticity, grade potential and any signs of tampering - often within minutes.
Submit a card, slab, booster pack or sealed box for review by a global team of authenticators, supported by AI. You get an Authentic or Replica verdict with the evidence behind it, rather than a score alone.
For raw cards and unopened packs, Validoe assesses condition and grade potential before you commit to an official grading submission, helping you judge whether a card is worth the time and cost.
Already-slabbed cards can be re-assessed to flag possible mislabeling and to surface grade or value potential you may have missed - useful when evaluating a slab on the secondary market.
Capture card images in the app, submit for review, and choose a turnaround. Reports can be returned in as little as ten minutes, with watermarked images and written commentary from the authenticator.
专项更强Outstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.
#1擅长大量改写与重写文字，但在所有应用中提供流畅的行内实时校对功能较少。
免费 / 开源ZeroGPT is an AI content detection platform with a text AI detector, AI image and video detectors, AI humanizer, plagiarism checker, and a set of writing tools including paraphraser, summarizer, grammar checker, translator, and citation helper.
免费 / 开源Undetectable AI is a web platform that scans text for AI fingerprints and rewrites flagged passages so they read like natural human writing. It bundles an AI detector, an AI humanizer and a growing set of media authenticity tools in a single dashboard.
专项更强Paperpal is an AI writing assistant built for researchers, academics, and students. It proofreads and rewrites academic prose in real time, suggests citations, checks references, and reads PDFs — all from inside Microsoft Word, Google Docs, Overleaf, the Chrome extension, or the web editor.
专项更强能直观突显可读性与句子复杂度，但缺乏自动语法修正和全浏览器扩展支持。
非常适合句子层级的语气调整与重写，但在独立的文法规则与风格指南方面较不全面。
专项更强Outstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.
免费 / 开源ZeroGPT is an AI content detection platform with a text AI detector, AI image and video detectors, AI humanizer, plagiarism checker, and a set of writing tools including paraphraser, summarizer, grammar checker, translator, and citation helper.
提供强大的跨应用多语言语法与风格检查，但高级生成式 AI 功能较少。
免费 / 开源Undetectable AI is a web platform that scans text for AI fingerprints and rewrites flagged passages so they read like natural human writing. It bundles an AI detector, an AI humanizer and a growing set of media authenticity tools in a single dashboard.
提供更深入的文稿分析与结构报告，但学习曲线比 Grammarly 陡峭。
专项更强Paperpal is an AI writing assistant built for researchers, academics, and students. It proofreads and rewrites academic prose in real time, suggests citations, checks references, and reads PDFs — all from inside Microsoft Word, Google Docs, Overleaf, the Chrome extension, or the web editor.
专项更强能直观突显可读性与句子复杂度，但缺乏自动语法修正和全浏览器扩展支持。
免费 / 开源不只给分数，还标出证据的 AI 检测器
具备自动补全、研究与 Chrome 扩展的 AI 写作助手
