in any application

Improve your writing in any macOS application with AI assistance. Quickly correct grammar mistakes, change writing styles, or translate text.

50% off for the first 10 customers (9 left)

Requires macOS 13.0 (Ventura) or later.

There's an AI for that
Rewrite text in any application with the help of AI

Current spell checker solutions only work in one place

Grammarly only works in Chrome. You miss out on corrections in many places, such as Slack, your code editor, or Figma documents.


You start writing a message in Slack.


You copy your text into ChatGPT to improve it.


After some chatting, you copy your message back.

Tired of switching between windows?

Current solutions

  • Only work in specific applications
  • Slowing down the UI
  • Charging for a monthly subscription
  • Provide a lot of features you don't need

Using RewriteBar

  • Works across all applications
  • Does not slow down the UI
  • No monthly subscription and pay as you go
  • Use your own OpenAI API key
  • No more copy-pasting
  • Fix all issues at once

All you need is to improveyour writing

  • Quickly fix grammar and spelling mistakes before sending them to your boss or client.
  • Adjust your writing tone for emails or Slack messages. Transform it into a professional tone for your boss or a casual tone for your friends.
  • Quickly translate words or sentences into another language. Currently supports 5 languages and counting. You can also use this to translate code snippets.
  • Use RewriteBar in any application on macOS. No need to copy and paste text. Just select the text and trigger your action.
  • Be more productive and use keyboard shortcuts to trigger an action. Customize the shortcuts to fit your workflow.


Improve your writing and increase your productivity

50% off for the first 10 customers (9 left)


Try it for free


  • Use our AI API (GPT-3.5)
  • Limited to 100 requests
Get started

Start for free


Subscription Plan

Use our servers to rewrite text




  • Use our AI API (GPT-3.5)
  • Does not require a API key
  • Unlimited app updates

Billed monthly

One Time License

Use your OpenAI API key




  • Requires an OpenAI API key
  • Use GPT-3.5, GPT-4 & GPT-4o
  • Privacy friendly
  • Unlimited app updates

One time payment


Frequently Asked Questions

  • This app runs in the Background and listens for a keyboard shortcut. When you select text and press the shortcut, the app sends the text to the OpenAI API, which corrects the text and sends it back to the app. The selected text will be then replaces with the corrected text.
  • After the purchase, you will directly see a page with your personal license key and further instructions on how to install the app.
  • Yes! You can request a refund within 7 days of your purchase. Reach out by email.
  • There are no additional costs if you purchase the subscription plan. For the one-time license, you have to provide an OpenAI API key, which is charged by OpenAI, depending on your usage.
  • The app needs access to your macOS accessibility permission to retrieve the currently selected text and replace it with the corrected text. Therefore, it works with any application you are using. The app does not store any of your data.