MetalForge
Tweak sliders, get a real Metal shader for SwiftUI or a Skia shader for React Native.
What it is
MetalForge is a browser editor for shader effects aimed at iOS builders. Pick one of dozens of effects, adjust its parameters with live preview, and export a real .metal file plus the SwiftUI view that uses it, or a Skia shader for React Native. The editor is free to play with (sign-in required); exporting the files needs the Pro plan.
Why it’s here
Shaders are where native apps get their polish and where most builders give up. This removes the blank-file problem: you leave with working code, not a tutorial. Worth it if you're shipping an iOS app with an agent and want one effect that feels premium.
Best for
- iOS apps built with SwiftUI
- React Native effects
- one premium shader effect
Can my agent use this?
Agent limited agent friendlinessNot directly. The editor needs a sign-in and exports sit behind Pro. Once you export the .metal file and SwiftUI view, hand those files to your agent and ask it to integrate them into a view.
Limited: Mainly a visual reference. Great for humans and for describing a direction, but there's little an agent can read or install.
Access methods
- Download
Related resources
Apple Human Interface Guidelines 
Apple Human Interface Guidelines
Apple's guidance on designing for iOS, macOS, watchOS and visionOS.
Design systemFreegood agent friendlinessRive 
Rive
Interactive vector animations with state machines, playable in any app.
ToolOpen sourcegood agent friendlinessThinking Orbs 
Thinking Orbs
An animated orb that shows what your AI is doing: listening, thinking, searching, working.
PackageFreeexcellent agent friendlinessStaff pickLiquid Logo 
Liquid Logo
Drop in your logo and get it back as flowing liquid metal, rendered live with shaders.
ToolFreegood agent friendlinessStaff pick