Alloy

About Alloy

Alloy is an AI prototyping tool that captures your live app from the browser and generates interactive, pixel-accurate prototypes from plain-text prompts. It is built to help teams explore feature ideas directly on top of an existing product without rebuilding UI from scratch.

Review

Alloy focuses on rapid experimentation by turning descriptions into working prototypes that match your app's style and layout. The experience centers on capturing app screens, chatting with an AI to describe changes, and receiving interactive concepts you can share with collaborators.

Key Features

• Browser capture of an existing app to import real UI and styling automatically
• Text-based AI chat to describe features and generate corresponding prototypes
• Pixel-accurate, interactive concepts that fit within the captured design system
• Export and sharing options for handing off prototypes to teammates and stakeholders
• Planned integrations with common design and development tools to streamline workflows

Pricing and Value

Alloy offers a permanently free tier for trying the core capabilities and a paid Pro plan that unlocks additional limits and advanced features. Promotional pricing (for example, a short-term discount on Pro) has been offered at launch. For teams that already have a product, Alloy aims to reduce the time and friction involved in communicating new ideas by producing working visuals from plain text, which can speed decision-making and reduce back-and-forth on mockups.

Pros

• Quickly turns written ideas into interactive prototypes using your real UI
• Produces prototypes that closely match existing design language and branding
• Low barrier to entry with a free tier for experimenting
• Helps non-designers communicate product changes with tangible examples

Cons

• Feature set is still expanding; some workflow integrations and reuse features are early or pending
• Complex apps may need manual cleanup after automatic capture and generation
• Accuracy can vary depending on how the source app is structured and styled

Alloy is a good fit for product managers, designers, and small product teams who want to prototype changes quickly on top of an existing application. It works best for iterative idea validation and early-stage feature exploration, especially when visual fidelity and speed matter more than production-ready code.

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