Refactor legacy interfaces without breaking the system

Modernize outdated UI surfaces directly in your codebase while preserving structure, logic, and system integrity.

Update legacy UI without rewriting everything

Start from existing screens and incrementally improve layout, components, and structure. Fei works within your current codebase so changes don’t require full rewrites.

Move toward modern standards safely

Migrate interfaces to modern components and patterns while preserving behavior. Improve consistency and usability without breaking anything.

Fei Studio empowers the whole team

Including Product Managers, Designers & Engineers

Use cases

  • Validate Product Ideas
    Turn early ideas into production-ready changes, release them behind feature flags, and learn from real user behavior before committing fully. More info

  • Prototype With Real Code
    Designers prototype new experiences directly in the product environment instead of relying only on static mockups. More info

  • Accelerate Feature Delivery
    Move from product requests, screenshots, or tickets to production-aligned pull requests faster by reducing handoffs. More info

  • Improve Existing Features
    Refine existing product experiences and workflows without rebuilding them from scratch. More info

  • Refactor Legacy Interfaces
    Modernize legacy UI surfaces and migrate them toward current component standards while preserving the structure of the real codebase. More info

  • Rapid Product Iteration
    Explore multiple variations of product flows quickly inside the real product environment to accelerate discovery and refinement. More info

  • Stakeholder Demos
    Create realistic demos using the real product environment instead of static mockups for leadership or customer conversations. More info

  • Design System Alignment
    Generate product updates that reuse existing components and patterns to maintain consistency across the application. More info

  • Turn Support Feedback Into Product Changes
    Translate customer feedback, bug reports, and support tickets into concrete product improvements aligned with the codebase. More info

  • Explore UX Improvements
    Experiment with navigation, layout, and interaction improvements directly in the real product environment. More info

  • Build Enterprise Customizations
    Create tailored product experiences required for enterprise customers while keeping changes aligned with the existing architecture. More info

  • Test Feature Variations
    Generate alternative versions of product flows and interfaces to explore new directions before committing to implementation. More info

Modernize your product without starting over

Connect your repo and start turning product ideas into real, testable changes.

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