# Contextify vs RewriteBar

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

| Metric | [Contextify](https://openaitools.app/tool/contextify-ai) | [RewriteBar](https://openaitools.app/tool/rewritebar) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/ask-cosmo/lbgiopjlkcmccgnopipbodadokhemmoj | https://rewritebar.com |
| Categories | AI Assistant, AI Summarizer, AI Rewriter, AI Translate | AI Assistant, AI Writing Assistants, AI Grammar Checker, AI Translate |
| Pricing Model | Free | Freemium, Free Trial, Paid |
| Monthly Visits | 0 | 26,294 |
| MoM Growth Rate | — | +6% |
| Primary Market | Global | United States |
| Direct Visits | 0 | 8,605 |
| Review Score | 4 | 4.3 |
| Saved Count | 1 | 0 |
| Supported Platforms | Browser Extension | Website |

## Contextify

Contextify is a Chrome extension built around a simple idea: you should be able to act on text the moment you highlight it. Instead of copying a paragraph into a separate chat window and re-typing a prompt, you save the prompts you use often as buttons, and those buttons appear when you select a snippet on any website. A translation, a summary, a rewording or a brainstorming list is then a single click away.

The extension is intentionally minimal. It does not try to be a full chatbot or a workspace; it stays out of the way until you highlight text. Because every action is driven by your own prompt, the same button framework can cover translation, summarization, rewriting, tone changes, explanations or free-form ideation, making it adaptable to how each person actually reads and works online.

The listing on the Chrome Web Store is maintained by Nordfjord Limited, the team behind the Cosmo AI browser assistant, and the current store listing carries the name Contextify. It is a free, small-footprint extension that reports no data collection, which makes it easy to try without changing your existing browser setup.

**Pricing & Plans:** Free Chrome extension.

- **Custom prompt buttons:** Set up your own named actions with the exact instructions you want, so each click produces the output you expect.
- **Works on any website:** Highlight a text snippet on virtually any page and your saved actions become available right away.
- **Translation, summarization and rewriting:** Cover the everyday text tasks — translate, condense, paraphrase, change tone — with a single click.
- **Lightweight and private:** A small extension that runs only when you select text, with the developer declaring no data collection.

**Strengths:** Zero-friction workflow: acts directly on highlighted text with no copy-paste; Fully customizable — you control the prompts behind each button; Very light footprint and free to install; Declared no data collection, which is reassuring for privacy-conscious users

**Limitations:** Small install base and no store ratings yet, so long-term maintenance is unproven; Requires a Cosmo AI account or service to power the prompts; Limited to Chrome, with no Firefox or Safari version

[Profile (Markdown)](https://openaitools.app/tool/contextify-ai.md)

## 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)

## Frequently Asked Questions

### How do Contextify and RewriteBar compare in monthly traffic?

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

### How do their growth rates compare?

Contextify has a month-over-month growth rate of —; RewriteBar has +6%.

### How does pricing compare?

Contextify: Free. Free Chrome extension. 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.

## 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 | [Tactiq](https://openaitools.app/tool/tactiq) | 6,521,542 | +4.1% | Freemium | Live meeting transcription and AI notes without a bot in the call | [.md](https://openaitools.app/tool/tactiq.md) |
| 4 | [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) |
| 5 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | All-in-one AI assistant across web, browser, desktop and mobile | [.md](https://openaitools.app/tool/monica-ai.md) |
| 6 | [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) |
| 7 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | One-click AI assistant for browsing, writing and research | [.md](https://openaitools.app/tool/merlin-ai.md) |
| 8 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | One browser agent that combines every major AI model with web automation | [.md](https://openaitools.app/tool/harpa-ai.md) |
| 9 | [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) |
| 10 | [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) |

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Source: https://openaitools.app/compare/contextify-ai-vs-rewritebar

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