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Justdone: GPT-4o AI Writing Assistant & Grammar Checker

Elevate your writing with Justdone — your all-in-one tool for grammar checking, paraphrasing, AI writing, and more.

Users200KCurrent public install base

Rating3.7Store average score

Reviews265Public review volume

Manifest versionV3Extension platform version

7-day growth0Net users gained this week

7-day growth rate0%Relative weekly velocity

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Justdone: GPT-4o AI Writing Assistant & Grammar Checker Media preview

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7-day rating change

Start

3.68

Latest

3.68

7-day rating change

0.00

2026年7月16日2026年7月22日

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Technical snapshot

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Version1.5.1

ManifestV3

Size707KiB

Languages16Deutsch / English / English (United Kingdom) +13

Published--

Store updated--

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Overview

Product summary

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Communicate with confidence, wherever you write online.

Justdone extension helps you write faster, more clearly, and with greater impact — whether you're drafting essays, sending emails, or compiling reports.

Powered by advanced AI, Justdone offers instant grammar suggestions in 30+ languages, enhances clarity, and adjusts your tone to suit the context. It’s the go-to extension for professionals, students, and anyone looking to improve their written communication online.

➤ Key Features

- Multilingual Grammar Check – Instantly detect and correct grammar and spelling issues in over 30 languages.

- Smart Text Improvement – Improve everything from individual words to full documents.

Reviews

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Store average score3.7Chrome Web Store aggregate rating, including ratings without synced review text

Synced text average3.4Average computed only from synced review bodies

Reviews with text203Synced review bodies

Total ratings / reviews265Chrome Web Store public rating/review count

Store average score: 3.7. Synced review text can be locked or unavailable even when the store shows a public score.

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AI product read

AI-powered writing assistant and grammar checker that works across any website

Helps users write more effectively by providing real-time grammar checking, text improvement, paraphrasing, summarization, and tone adjustment directly within any web text field

User types or selects text in any web input field → extension analyzes text in real-time via API calls to justdone.ai → grammar/style issues are flagged with color-coded suggestions → user can accept suggestions, paraphrase, summarize, or adjust tone through context menu or popup interface

Target users: Professionals writing emails and reports / Students writing essays / Non-native English speakers / Anyone wanting to improve written communication online

Source code is heavily minified (1.1MB+ contentScript.bundle.js, 635KB popup.bundle.js), making it difficult to trace exact auth and payment flows
Login enforcement logic could not be directly observed in source code
No explicit billing/payment processor code found, paid tier is inferred from assets and subscription terms URL

Monetization

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Permission risk

Medium-risk permissions

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扩展能力较强：storage、tabs

Publisher

justdone-extension

Independent publisher

Email: [email protected]
Phone: --
Address: --

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Permissions

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