Add to ChromeHow they compare
These tools solve different stages of the same problem: communicating precise design intent to a coding agent. Design Mode captures changes in the context of an existing page. UIPrompt offers a standalone component playground with exact values, interaction-state overrides and theme-aware tokens. It specifies what to build rather than editing your deployed interface.
Feature-by-feature
| Feature | Design Mode | UIPrompt |
|---|---|---|
| Design surface | Edit the real rendered page, including styles, text and DOM structure on supported scriptable websites. | Standalone browser component editor. Its public catalogue lists twelve component types, including buttons, inputs, tabs and toasts. |
| Output for the agent | Recorded changes and comments as a copied prompt, export or MCP hand-off. The agent implements them in your repository. | Generated component or system prompts. The public editor exposes Claude Code, Cursor and v0 targets, React/CSS/Vue output options, and full or concise text. |
| States and design tokens | Detect and edit existing page tokens, preserve token references in exports, and record trigger-specific motion changes. Starts from the page rather than a standalone component library. | Explicit state overrides and tokens with light/dark values. In the playground, a hover-colour edit produced a differences-only section in the prompt. |
| Implementation guidance | Send the intended change with page context; review the agent's implementation and test accessibility in the real app. | Generated prompts include focus-visible, reduced-motion, contrast and hit-target guidance. These instructions do not prove the resulting component is accessible. |
| Cost and saving | Free under MIT; no paid component quota. Any paid coding agent or model is separate. | Anonymous playground; free accounts save three components with full single-component prompts. Advertised $39 one-time launch price (regular $59) unlocks unlimited components and system-pack export. Agent costs are separate. |
When to pick Design Mode
- The component already exists in your product and you need to refine it alongside real layout and content.
- You need page-level edits, element or region comments, and optional direct MCP hand-off.
- You want free editing and exports without saved-component limits.
When to pick UIPrompt
- You are defining a reusable component before it exists in the app.
- You want default, hover, focus, active and disabled specifications with explicit differences between states.
- You want a shared-token component-library prompt rather than a diff from a live webpage.
Honest take
UIPrompt is a useful specification tool, not a direct substitute for live-page editing. Its strongest idea is making interaction states and implementation constraints explicit. Use it to define a component library; use Design Mode to refine how components actually behave in a product. The vendor's exact-match experiment is not a guarantee that every agent will reproduce every design correctly.
Sources and scope
Sources checked 16 September 2026. Opened the anonymous editor, changed a button radius from 8px to 12px and confirmed the prompt updated. Selected Hover, changed its background to #2563EB and confirmed a separate hover-diff section. Inspected state, token and output controls. Pricing and paid system-pack/share capabilities come from the homepage; no login, purchase, public sharing or paid export was tested. No editor version was exposed.