# RewriteBar vs Write Brain

RewriteBar records 26,294 monthly visits with +6% month-over-month growth and Freemium, Free Trial, Paid pricing. Write Brain records 0 monthly visits with 0% growth and Freemium pricing.

| Metric | [RewriteBar](https://openaitools.app/tool/rewritebar) | [Write Brain](https://openaitools.app/tool/write-brain) |
| :--- | :--- | :--- |
| Website URL | https://rewritebar.com | https://writebrain.io |
| Categories | AI Assistant, AI Writing Assistants, AI Grammar Checker, AI Translate | AI Writing Assistants, AI Grammar Checker, AI Translate, AI Creative Writing |
| Pricing Model | Freemium, Free Trial, Paid | Freemium |
| Monthly Visits | 26,294 | 0 |
| MoM Growth Rate | +6% | 0% |
| Primary Market | United States | Global |
| Direct Visits | 8,605 | 0 |
| Review Score | 4.3 | 4.1 |
| Saved Count | 0 | 1 |
| Supported Platforms | Website | Website |

## RewriteBar

RewriteBar solves a very practical problem for Mac users: most writing assistants live in their own editor or browser tab, while real writing happens everywhere — Slack threads, email clients, Google Docs, Notion, Word, WhatsApp and code editors. RewriteBar instead sits at the system level. It grabs your current selection, sends it to a language model with the action you picked, and pastes the result straight back over the original text, so you never leave the app you are working in.

Out of the box it ships with a library of ready-made actions: grammar and spelling fixes that understand full-sentence context, rewriting for clarity, simplification, tone adjustment, humanizing AI-sounding text, summarising to bullet points, fixing broken JSON, converting to title case, turning formal German or French into the informal register, and translation across 500+ languages. On top of those presets you can build your own commands, insert variables, and chain several actions into one workflow — expand, emoji-fy, translate and summarise in a single pass. A side-by-side diff view lets you check exactly what changed before you accept it.

Flexibility is the other selling point. You can bring your own API key from OpenAI, Anthropic, Google, Groq, Mistral, DeepSeek, OpenRouter and dozens more; subscribe to the RewriteBar Gateway to get access to 70 models without managing keys; or run everything through a local model with Ollama, LM Studio or Apple Intelligence for maximum privacy. The app is only around 25 MB, is natively built for macOS, integrates with PopClip, and never stores your text on RewriteBar's servers.

**Pricing & Plans:** Freemium with a free trial, then one-time licences. Try it free with 35,000 credits and no credit card; Standard is $29 one-time (1 device, 35,000 credits, BYOK and local models); Pro is $59 one-time (3 devices, 1 year of RewriteBar Gateway with 3 million monthly credits). Extra devices cost $19 one-time, and the RewriteBar Gateway can be bought separately for $40 per year. Refunds available within 14 days.

- **Works in any application:** RewriteBar captures the selected text system-wide and pastes the improved version back, so it functions in Chrome, Google Docs, Word, Slack, Notion, VS Code, email clients and more.
- **Preset and custom AI actions:** Use built-in commands such as fix grammar, simplify, humanize, summarise, title case, fix JSON, create ASCII art or translate, or author your own commands with variables and prompt libraries.
- **Chain actions into workflows:** Combine several actions to transform text step by step — for example expand, add emojis, translate and rewrite a title in one flow.
- **Cloud or fully local models:** Bring your own API key from major providers, use the RewriteBar Gateway, or keep everything on-device with Ollama, LM Studio, oMLX or Apple Intelligence.
- **Diff view and shortcut-driven flow:** Compare original and rewritten text line by line or word by word, and trigger everything from keyboard shortcuts or PopClip integration.

**Strengths:** Genuinely app-agnostic thanks to system-level text capture; One-time licence options with no mandatory subscription; Strong privacy story with local model support and no server-side text storage; Very small footprint (~25 MB) with native macOS performance

**Limitations:** macOS only, with no Windows or Linux version; Some actions require configuring your own API key, which adds setup work and separate provider costs; Advanced workflows and the 70-model gateway are gated behind the Pro or Gateway plans

[Profile (Markdown)](https://openaitools.app/tool/rewritebar.md)

## Write Brain

Write Brain is a lightweight writing assistant that lives inside your browser as a Chrome extension. Rather than asking you to paste text into a separate app, it attaches a small menu of improvement commands to whichever text box you are already typing in. That means it can help while you are composing a LinkedIn post, replying in Gmail, leaving a YouTube comment, or filling out an online form.

The core idea is speed. You type naturally, then use the extension to clean up grammar and typos, remove fluff, sharpen your wording, or change the tone so it fits the context. Because it works in place, you avoid the copy-paste round trip that standalone grammar checkers require.

Beyond proofreading, Write Brain adds a few creative touches: it can translate text to or from your home language, which is handy for reading foreign comments or answering international customers, and it can suggest emoji for headings and list items. It is a general-purpose helper for people who write a lot on the web and want quick, low-friction improvements rather than a full document editor.

**Pricing & Plans:** Freemium. The extension is free to install from the Chrome Web Store, and the store listing indicates in-app purchases are available for paid features or higher usage limits.

- **One-click grammar fixes:** Automatically spot and correct typos and grammar slips in any text field and fix them with a single click before you send.
- **Conciseness and clarity:** Strip out verbose corporate phrasing and unnecessary words to turn rambling drafts into clear, direct messages.
- **Writing enhancement:** Turn a rough outline into richer, more descriptive prose with quick suggestions on how to phrase your point better.
- **Inline translation:** Translate text in place, so you can read foreign-language comments or reply to customers in their own language.
- **Emoji suggestions:** Get context-appropriate emoji suggested for paragraph endings and as bullets for list items to add personality.

**Strengths:** Works directly inside any website's text fields, no copy-paste required; Covers grammar, conciseness, tone, translation, and emoji in one menu; Fast, one-click improvements suited to short-form and social writing; Lightweight browser extension with a simple learning curve

**Limitations:** Requires installing a Chrome extension before most features work; No dedicated desktop or mobile app; Feature set is narrower than full document editors like Google Docs add-ons; Grammar and rewrite quality can miss nuanced or technical language

[Profile (Markdown)](https://openaitools.app/tool/write-brain.md)

## Frequently Asked Questions

### How do RewriteBar and Write Brain compare in monthly traffic?

RewriteBar has 26,294 monthly visits, while Write Brain has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

RewriteBar has a month-over-month growth rate of +6%; Write Brain has 0%.

### How does pricing compare?

RewriteBar: Freemium, Free Trial, Paid. Freemium with a free trial, then one-time licences. Try it free with 35,000 credits and no credit card; Standard is $29 one-time (1 device, 35,000 credits, BYOK and local models); Pro is $59 one-time (3 devices, 1 year of RewriteBar Gateway with 3 million monthly credits). Extra devices cost $19 one-time, and the RewriteBar Gateway can be bought separately for $40 per year. Refunds available within 14 days. Write Brain: Freemium. Freemium. The extension is free to install from the Chrome Web Store, and the store listing indicates in-app purchases are available for paid features or higher usage limits.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Grammarly](https://openaitools.app/tool/grammarly) | 58,867,412 | -1.5% | Freemium | Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides. | [.md](https://openaitools.app/tool/grammarly.md) |
| 2 | [QuillBot Paraphraser](https://openaitools.app/tool/quillbot-paraphraser) | 36,630,337 | +2.3% | Freemium | Paraphrase, proofread and summarize text with an AI writing workspace | [.md](https://openaitools.app/tool/quillbot-paraphraser.md) |
| 3 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | AI grammar, spelling and style checker for 30+ languages | [.md](https://openaitools.app/tool/languagetool.md) |
| 4 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | AI sidebar and browser agent for reading, writing and research | [.md](https://openaitools.app/tool/sider.md) |
| 5 | [Wordtune](https://openaitools.app/tool/wordtune) | 368,771 | -5.8% | Freemium, Free Trial | Express yourself with confidence — rewrite, proofread and summarize in one click | [.md](https://openaitools.app/tool/wordtune.md) |
| 6 | [HyperWrite](https://openaitools.app/tool/hyperwrite-ai) | 255,429 | +34.4% | Freemium | AI writing assistant with autocomplete, research, and a Chrome extension | [.md](https://openaitools.app/tool/hyperwrite-ai.md) |
| 7 | [Linguix](https://openaitools.app/tool/linguix) | 227,398 | -4.5% | Freemium | AI grammar checker and writing assistant for teams and professionals | [.md](https://openaitools.app/tool/linguix.md) |
| 8 | [TextAdviser](https://openaitools.app/tool/textadviser-com) | 61,006 | +37.8% | Freemium | Check, fix, and improve any text with one AI writing assistant | [.md](https://openaitools.app/tool/textadviser-com.md) |
| 9 | [Kerlig AI](https://openaitools.app/tool/kerlig-ai) | 26,474 | -21.3% | Paid | Native macOS AI writing assistant that lives in every app | [.md](https://openaitools.app/tool/kerlig-ai.md) |
| 10 | [MacGPT](https://openaitools.app/tool/macgpt) | 26,224 | -7.5% | Freemium | ChatGPT in your Mac menu bar, inline and everywhere | [.md](https://openaitools.app/tool/macgpt.md) |

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Source: https://openaitools.app/compare/rewritebar-vs-write-brain

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