Live webinar series: Weekly round-tables with industry leaders from product, desig & engineering. Sign up →
Start Free Trial
Start Free Trial
Start Free Trial

Product Managers

Improve existing features without rebuilding them

Refine product flows and experiences directly in your application, using your existing components and structure.
Start Free Trial
Book a Demo

Product & Design

Change the feature where it actually lives

Start from the existing screen or flow and modify it directly. Fei works within your current components and structure, so changes build on what’s already there.

Product & Design

Iterate safely on live product behavior, deliver PR when done

Adjust flows, interactions, and states without breaking the system. Improve what’s live, test variations, and evolve the feature without starting over. Deliver to engineering as a well written PR.

Use cases

Fei Studio empowers the whole team

Including Product Managers, Designers & Engineers
All
Product
Design
Engineering
Validate Product Ideas
Turn early ideas into production-ready changes, release them behind feature flags, and learn from real user behavior before committing fully.
Product
Prototype With Real Code
Designers prototype new experiences directly in the product environment instead of relying only on static mockups.
Design
Accelerate Feature Delivery
Move from product requests, screenshots, or tickets to production-aligned pull requests faster by reducing handoffs.
Product Engineering
Improve Existing Features
Refine existing product experiences and workflows without rebuilding them from scratch.
Product Design Engineering
Refactor Legacy Interfaces
Modernize legacy UI surfaces and migrate them toward current component standards while preserving the structure of the real codebase.
Engineering Design
Rapid Product Iteration
Explore multiple variations of product flows quickly inside the real product environment to accelerate discovery and refinement.
Product Design
Stakeholder Demos
Create realistic demos using the real product environment instead of static mockups for leadership or customer conversations.
Product Design
Design System Alignment
Generate product updates that reuse existing components and patterns to maintain consistency across the application.
Design Engineering
Turn Support Feedback Into Product Changes
Translate customer feedback, bug reports, and support tickets into concrete product improvements aligned with the codebase.
Product
Explore UX Improvements
Experiment with navigation, layout, and interaction improvements directly in the real product environment.
Design Product
Build Enterprise Customizations
Create tailored product experiences required for enterprise customers while keeping changes aligned with the existing architecture.
Engineering Product
Test Feature Variations
Generate alternative versions of product flows and interfaces to explore new directions before committing to implementation.
Product Design

Improve existing features easily

Connect your repo and start turning product ideas into real, testable changes.
Start Free Trial
No credit card required.