Write Once,
Run Truuuly Native ⚡︎

Transform Your Code Into Pure Native UI

SwiftUI
Kotlin
Web

ThunderUI transforms your code into real SwiftUI, Jetpack Compose, and Web components - not just another cross-platform wrapper.

ThunderUI
<VStack spacing={16}>
  <Text style={{ fontSize: 24, fontWeight: 'bold' }}>
    Profile Settings
  </Text>
  
  <Progress value={85} />
  
  <Modal title="Edit Profile">
    <VStack spacing={12}>
      <Text>Update your profile details</Text>
      <Button>Save Changes</Button>
    </VStack>
  </Modal>
</VStack>
ThunderUI Transformer
{
  "type": "VStack",
  "props": {
    "spacing": 16,
    "children": [{
      "type": "Text",
      "props": {
        "content": "Profile Settings",
        "style": {
          "fontSize": 24,
          "fontWeight": "bold"
        }
      }
    }, {
      "type": "Progress",
      "props": {
        "value": 85
      }
    }, {
      "type": "Modal",
      "props": {
        "title": "Edit Profile",
        "children": {
          "type": "VStack",
          "props": {
            "spacing": 12,
            "children": [{
              "type": "Text",
              "props": {
                "content": "Update your profile details"
              }
            }, {
              "type": "Button",
              "props": {
                "children": "Save Changes"
              }
            }]
          }
        }
      }
    }]
  }
}
ThunderSwift Transpiler
ThunderKotlin Transpiler
ThunderWeb Transpiler
SwiftUI
VStack(spacing: 16) {
  Text("Profile Settings")
    .font(.system(size: 24, weight: .bold))
    
  ProgressView(value: 0.85)
    
  Sheet {
    VStack(spacing: 12) {
      Text("Update your profile details")
      Button("Save Changes") {}
    }
    .navigationTitle("Edit Profile")
  }
}
Kotlin
Column(
  verticalArrangement = 
    Arrangement.spacedBy(16.dp)
) {
  Text(
    text = "Profile Settings",
    style = TextStyle(
      fontSize = 24.sp,
      fontWeight = FontWeight.Bold
    )
  )
  
  LinearProgressIndicator(
    progress = 0.85f
  )
  
  ModalBottomSheetLayout(
    sheetContent = {
      Column(
        verticalArrangement = 
          Arrangement.spacedBy(12.dp)
      ) {
        Text("Update your profile details")
        Button(onClick = {}) {
          Text("Save Changes")
        }
      }
    }
  )
}
Web
<div class="flex flex-col gap-4">
  <span class="text-2xl font-bold">
    Profile Settings
  </span>
  
  <progress 
    value="85" 
    max="100"
  />
  
  <dialog class="modal">
    <div class="modal-content">
      <header>
        <h3>Edit Profile</h3>
      </header>
      
      <div class="flex flex-col gap-3">
        <span>Update your profile details</span>
        <button>Save Changes</button>
      </div>
    </div>
  </dialog>
</div>

True Native Output

Pure SwiftUI and Jetpack Compose code - no wrappers, no bridges, just native.

Zero Runtime Overhead

Compile-time transformation with direct native API calls and no interpretation layer.

Platform-Specific Features

Access SwiftUI modifiers, Compose animations, and web APIs directly.

100%
Native Performance
0KB
Runtime Overhead
100%
Type Coverage
<1s
Build Time

Cross-Platform Component Mapping*

Component

VStack
HStack
Text
Image
Button
TabView
TabItem
WebView
Progress
Modal
Disclosure
ScrollView

Web

<div> with flex column
<div> with flex row
<span>
<img>
<button>
Custom tabs with CSS
Tab panel
<iframe>
<progress>
CSS-based bottom sheet
<details>/<summary>
CSS overflow

iOS

VStack
HStack
Text
AsyncImage
Button
TabView
TabItem
WKWebView
ProgressView
Sheet
DisclosureGroup
ScrollView

Android

Column
Row
Text
AsyncImage
Button
TabRow
Tab
WebView
LinearProgressIndicator
ModalBottomSheetLayout
ExpandableContent
LazyColumn

*This is a work in progress (≈ 20% completed).

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