PromptDC vs Sider
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. Sider is typically used for an AI sidebar for chat, summarize, and translate.
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.
Sider is typically stronger for an AI sidebar for chat, summarize, and translate.
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 Sider is best for
Sider is an AI sidebar assistant for chatting with multiple models, summarizing, translating, and writing while you browse.
Sider is a multi-model AI sidebar; PromptDC is a focused rewriting and prompt-enhancing tool for selected text across desktop apps, Chrome, and supported editors.
Side-by-side comparison
| Category | PromptDC | Sider |
|---|---|---|
| Primary use case | Improve selected writing and AI prompts anywhere on macOS and Windows. | an AI sidebar for chat, summarize, and translate |
| Where it works | Desktop app: any app, every browser, IDE, and terminal on macOS and Windows. Chrome and IDE extensions are optional additions. | Sidebar across the web; multi-model chat. |
| What it rewrites | Grammar, email, social, summaries, tone, prompts, and more. | Chat, summarize, translate, and write via the sidebar. |
| Profiles & Actions | 10 built-in profiles plus custom profiles and Actions. Desktop supports per-app defaults; Chrome supports per-website defaults. | Chat tools and presets, not per-site profiles. |
| Code prompts | The Code profile creates implementation-ready prompts for AI coding tools and terminal CLIs. | Chat-based; not in-place prompt rewriting. |
| Current pricing | No free tier. Pro is $9/month. Lifetime starts at $69 one time with BYOK. | Free use includes 30 basic credits per day. Sider's web page varies plans by credits; the US App Store listed Basic at $14.99/month, Professional at $29.99/month, and Ultra at $59.99/month on July 21, 2026. Web and regional prices may differ. |
Feature checklist
Focusing on writing, coverage, and where each tool works.
| Capability | PromptDC | Sider |
|---|---|---|
| Works in any app, every browser, IDE, and terminal on macOS and Windows | Yes | Partial (sidebar) |
| Grammar and tone correction | Yes | Partial |
| Writing profiles for email, social posts, and summaries | Yes | Yes (via chat) |
| Per-website default profiles | Yes | No |
| Improves AI prompts (ChatGPT, Claude, Gemini) | Yes | Partial |
Before & after
Your text
summarize this long email thread about the budget and next steps
PromptDC enhanced
Overview: Budget approved; launch moved to the 14th. • Finance signed off on the budget • Launch moved from the 7th to the 14th • Next: Sam updates the roadmap; Priya notifies the client
Why choose PromptDC over Sider?
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.
Choose Sider if
You want one product for frontier-model chat, page and PDF translation, summaries, browser automation, code-based webpage customization, and media creation.
You need a free daily credit allowance before subscribing.
You prefer bundled model access and cloud-computer features rather than managing a BYOK account.
Sider's current regional checkout price and credit allocation fit your usage after you verify them.
Sider now covers much more than writing
Sider's official pricing page groups its product into Chat, Claw, Code, and Create. Chat covers multiple frontier models, summaries, explanations, and translation. Claw automates browser tasks. Code can customize webpages. Create handles images, video, slides, and documents. AI writing is one feature inside that larger workspace.
PromptDC remains centered on text transformation. On desktop, it works with selected text in any app, including the terminal. In Chrome, its toolbar handles editable fields and read-only selections. Its writing profiles map to common communication tasks, and the Code profile improves requests before they go to an AI coding system. In supported editors, it rewrites prompts in the editor's AI chat panel. It does not claim to provide Sider's browser automation, cloud computer, media studio, or multi-model chat environment.
That makes a direct feature count misleading. A user who wants an AI operating layer for browsing may find Sider far more capable. A user who only wants dependable rewrites can find the larger interface and credit model unnecessary.
Why Sider pricing needs a checkout check
Sider's official web pricing page says plans vary by monthly credits and cloud computer power, but its public text did not expose stable dollar amounts during this review. Official help documentation lists 30 basic credits per day for free users. The US Apple App Store listed Basic at $14.99 monthly, Professional at $29.99 monthly, and Ultra at $59.99 monthly on July 21, 2026.
Those App Store amounts should not be treated as universal web prices. Billing platform, region, promotion, and annual versus monthly selection can change the amount. Buyers should open Sider's live pricing page, identify the credit pool for the models they actually use, and compare the full renewal price.
PromptDC publishes Pro at $9 per month and Lifetime from $69 one time with BYOK support. There is no free tier.
Credits, model access, and workflow fit
A Sider credit does not necessarily equal one task across every feature. Model and feature costs can differ, so a headline credit pool must be translated into the actual mix of chats, research runs, translations, and creations you expect. PromptDC Lifetime instead uses BYOK.
Choose Sider if browser automation, model choice, translation, document chat, or creative tools are part of the job. Choose PromptDC if you want a smaller rewriting layer that follows selected text and offers a clear one-time product option. Both require review of generated claims and careful handling of confidential data.
- Verify Sider's price and credits in your own region before paying.
- Estimate tasks per month, not only credits or tokens.
- Do not pay for broad generation features if your repeat need is only rewriting.
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