Writing Improver for Mac — Polish Any Text With One Shortcut

"The meeting was good. We talked about lots of stuff. The main thing was the budget. Everyone had different opinions. In the end we decided to wait and see." You've written sentences like this. Everyone has. They capture the facts, but they land with the weight of a shrug. The information is there; the clarity, the professionalism, and the impact are not.

When you search for a writing improver, you're not looking for a spell checker or a grammar tool. You're looking for something that takes text that technically works and makes it genuinely good — tightening vague language, elevating tone, sharpening structure, and transforming casual notes into writing that commands respect. WunderType does exactly that, system-wide on your Mac, with a single keyboard shortcut.

A Writing Improver That Works in Every App

WunderType is a macOS menu bar app that gives you AI-powered text actions through Custom Prompts. Each prompt carries its own instruction and keyboard shortcut, and it works everywhere — in Mail, Notes, Google Docs, Slack, your CMS, even code editors. Wherever you write, WunderType improves your writing in place.

Select the text you want to improve, press your shortcut, and the polished version replaces the original on the spot. No copy-pasting into a browser tab. No switching apps. No interrupting your flow.

See the Difference: Casual vs. Polished Writing

Here's a meeting summary that gets the job done but doesn't do it well:

Before

The meeting was good. We talked about lots of stuff. The main thing was the budget. Everyone had different opinions. In the end we decided to wait and see.

Select it, press ⌥⌘I, and WunderType delivers:

After

The meeting was productive, covering several key topics. The primary discussion centered on the budget, where team members shared differing perspectives. The consensus was to take a wait-and-see approach.

The facts haven't changed. "Good" becomes "productive" — a word that actually says something. "Lots of stuff" becomes "several key topics." "Everyone had different opinions" becomes "team members shared differing perspectives" — the same idea, but with the professional register a meeting summary deserves. Five choppy sentences merge into three that flow naturally.

What Writing Improvement Actually Means

Unlike tools that target a single dimension, a writing improver works holistically across multiple fronts at once:

• Clarity — replacing vague words like "stuff" and "things" with specific, informative language
• Tone — elevating casual phrasing to match the context, whether that's a business email, a report, or a client message
• Structure — combining choppy sentences into well-paced prose that's easier to read
• Professionalism — choosing words that signal competence without sounding stiff or robotic
• Concision — tightening wordy passages without losing meaning

A grammar checker would leave "The meeting was good" untouched — there's nothing grammatically wrong with it. A writing improver recognizes that "good" is the written equivalent of a shrug and replaces it with language that carries weight.

Set Up Your Writing Improver Prompt

1. Click the WunderType icon in your Mac's menu bar and open Custom Prompts
2. Create a new prompt named "Writing Improver" with an instruction like: Improve the selected text by enhancing clarity, tone, and professionalism. Replace vague language with specific words, combine choppy sentences into smooth prose, and elevate casual phrasing to a polished register. Preserve the original meaning and factual content. Output only the improved text.
3. Assign ⌥⌘I as the keyboard shortcut — it now works in every app on your Mac

Where a Writing Improver Changes Your Day

• Meeting notes and summaries — where you captured the substance quickly and need to share it with stakeholders who expect polish
• Emails to clients or leadership — where "sounds good, let's circle back" needs to become something a professional would be proud to send
• Reports and documentation — where clarity and structure matter more than speed of drafting
• Slack messages to external partners — where the line between casual and careless is thinner than you think
• Cover letters and proposals — where every sentence shapes someone's perception of your competence

With WunderType, you draft fast and rough. Then you select, press ⌥⌘I, and get back writing that reads like you spent ten minutes polishing it.

Your Writing, Your Standards

WunderType connects to OpenAI or runs entirely offline through Ollama. With a local model, your writing never leaves your Mac — no cloud processing, no data collection, no third-party access.

Because you write the Custom Prompt instruction yourself, the improvement follows your standards. Want a formal register? Adjust the instruction. Prefer a warm tone for client communications? Create a separate prompt. You decide what "improved" means for your context.

Download WunderType from the Mac App Store and start turning rough drafts into polished writing with a single keystroke.