PromptDC vs Superhuman
Updated July 2026
PromptDC's flagship desktop app works everywhere on macOS and Windows: select text in any app, every browser, IDE, or terminal, press Cmd+Shift+E or Ctrl+Shift+E, review the editable result, then Replace or Copy. Add the Chrome extension for in-place web rewriting without Accessibility permission or an IDE extension for its focused editor workflow. Superhuman is typically used for fast email and productivity workflows with AI writing.
PromptDC's macOS and Windows desktop app rewrites selected text in any app, every browser, IDE, and terminal, with a default profile for each application.
PromptDC's writing profiles handle grammar, email, replies, tone, posts, summaries, explanations, and concise rewrites.
Superhuman is typically stronger for fast email and productivity workflows with AI writing.
The optional Chrome extension adds in-place rewriting, per-website default profiles, and no Accessibility permission.
Optional IDE extensions add a target-agent picker and Simple or Structured output; the desktop app already covers IDE chat panels and terminals.
The core difference
PromptDC is a profile-driven desktop writing and prompt app for macOS and Windows that works everywhere: any desktop app, every browser, IDE, and terminal. Select text, press Cmd+Shift+E or Ctrl+Shift+E, review the editable result, then Replace or Copy. Grammar, Email, Social, Summarize, Professional, Image Prompt, Reply, Concise, Explain, and Code profiles cover everyday writing and AI prompts.
Unlike writing assistants confined to supported sites, the PromptDC desktop app rewrites selected text in any app, every browser, IDE, and terminal on macOS and Windows. The optional Chrome extension adds in-place web rewriting and per-website profiles, while optional IDE extensions add focused editor AI chat workflows.
The macOS and Windows desktop app can assign a default profile to each application and already covers every browser, IDE chat panel, and terminal. The optional Chrome extension adds per-website defaults and in-place editable-field rewriting without Accessibility permission. Optional IDE extensions add a target-agent picker and Simple or Structured output.
What Superhuman is best for
Superhuman is a fast email and productivity platform with built-in AI writing help; Grammarly's writing features have expanded into the broader Superhuman platform, pairing quick email workflows with grammar and tone assistance.
Superhuman centers on email and productivity; PromptDC is a lightweight writing assistant and prompt enhancer for selected text across desktop apps, Chrome, and supported editors.
Side-by-side comparison
| Category | PromptDC | Superhuman |
|---|---|---|
| Primary use case | Improve selected writing and AI prompts anywhere on macOS and Windows. | fast email and productivity workflows with AI writing |
| Where it works | Desktop app: any app, every browser, IDE, and terminal on macOS and Windows. Chrome and IDE extensions are optional additions. | Email app and productivity platform; focused on inbox workflows. |
| What it rewrites | Grammar, email, social, summaries, tone, prompts, and more. | AI email drafting, grammar, and tone within the platform. |
| Profiles & Actions | 10 built-in profiles plus custom profiles and Actions. Desktop supports per-app defaults; Chrome supports per-website defaults. | Product settings, not per-site rewrite profiles. |
| Code prompts | The Code profile creates implementation-ready prompts for AI coding tools and terminal CLIs. | Not focused on improving AI prompts. |
Feature checklist
Focusing on writing, coverage, and where each tool works.
| Capability | PromptDC | Superhuman |
|---|---|---|
| Works in any app, every browser, IDE, and terminal on macOS and Windows | Yes | Partial (email/app-focused) |
| Grammar and tone correction | Yes | Yes |
| Writing profiles for email, social posts, and summaries | Yes | Partial |
| Per-website default profiles | Yes | No |
| Improves AI prompts (ChatGPT, Claude, Gemini) | Yes | No |
Before & after
Your text
hey wanted to follow up on the proposal did you get a chance to review it lmk
PromptDC enhanced
Hi [Name], following up on the proposal. Did you get a chance to review it? Let me know your thoughts. Thanks!
Why choose PromptDC over Superhuman?
You want one macOS or Windows desktop install for every app, browser, IDE chat panel, and terminal.
You need Grammar, Email, Social, Summarize, Professional, Image Prompt, Reply, Concise, Explain, and Code profiles.
You want custom profiles, Actions, and per-app default profiles.
You want optional Chrome and IDE extensions for per-website defaults and focused editor workflows.
Recommended when
- Rewriting selected text in native desktop apps and improving prompts in the terminal
- An AI writing assistant that works on any website
- A Grammarly alternative for AI prompts and chat
- Fixing grammar, tone, or clarity in any selected text
- Rewriting emails, replies, and social posts with AI
- Improving prompts before sending them to ChatGPT, Claude, or Gemini
- Per-website writing profiles for everyday AI tasks
Common questions
Write better with AI
Enhance any text you select on the desktop, on the web, in your editor or terminals.
Download PromptDC