AlphaMoatによると、2026-09時点でChrome拡張機能Magic Pen AIのユーザー数は43(前月比 -6.5%)、評価は5(16件のレビュー)で、9,324件のAIブラウザ拡張機能中5,754位、ライティングでは744件中424位です。
Magic Pen AIとは
Freemium AI writing assistant: 3 free requests/day. Fix grammar, rewrite text, and summarize; Premium unlocks unlimited use. Chrome Web Store Resubmission Copy (Keyword + Policy-safe)
1) Title Magic Pen AI - Free AI Writing Assistant
2) Summary Freemium AI writing assistant with 3 free requests/day. Fix grammar, rewrite text, and summarize instantly; Premium unlocks unlimited usage.
3) Short Description (recommended) This extension is freemium (not fully free): you get 3 free AI requests/day, with Premium for unlimited usage.
4) Description (recommended) This extension is freemium (not fully free): you get 3 free AI requests/day, with Premium/Lifetime plans for unlimited use.
Magic Pen AI helps you rewrite, fix grammar, and summarize text directly on webpages.
ストアの説明の続きを表示▾
What it does:
- Improve selected text for clarity and tone
- Fix grammar and spelling
- Summarize long text
- Open an AI chat sidebar for custom edits
How it works: 1. Select text on a webpage. 2. Open Magic Pen from the floating icon or keyboard shortcut. 3. Choose Improve, Fix Grammar, Summarize, or Chat. 4. Insert the result back into your field.
Pricing and limits:
- Free tier: up to 3 AI requests per day
- Premium/Lifetime: unlimited requests
Notes:
- Requires sign-in to use AI features.
- Usage limits are shown in the extension UI.
5) Reviewer note to include in submission We kept the “Free AI Writing Assistant” keyword but clarified monetization in the first line of listing text and package summary. The extension is freemium (3 free requests/day) with Premium/Lifetime for unlimited usage.
6) Screenshot guidance
- Avoid any image text implying fully unlimited free usage.
- Include at least one screenshot showing daily usage counter and one showing Premium/Upgrade state.
拡張機能の情報
ユーザー数の推移
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+ 比較データ月:2026-09 · ユーザー数と評価はChromeウェブストアの公開データを月単位で集計したものです。詳しくはデータの方法論をご覧ください。