NativeBridge - Bidirectional iOS & Android Code Converter
Swift to Kotlin & Kotlin to Swift

Convert iOS ↔ Android
with Production-Ready UI

  • 82.6%+ UI conversion accuracy — SwiftUI → Jetpack Compose, UIKit → Android Views
  • 107+ conversion patterns — Grids, forms, animations, gestures, responsive design
  • 14 libraries detected automatically — Alamofire, Firebase, Realm, and more
  • Auto-generated build.gradle — 85%+ compilation rate out of the box
struct User {
    let id: UUID
    var name: String
    var email: String?

    func displayName() -> String {
        return name.capitalized
    }

    mutating func updateEmail(_ newEmail: String) {
        email = newEmail
    }
}
Try It Live

See the Full Value in Seconds

Paste your code to see converted output + API detection (up to 2500 characters)

Swift Input
Drop .swift or .kt file
Kotlin Output
Converted code will appear here...
Want to convert full projects? Start Converting
Simple Process

How It Works

Convert your code in three simple steps

1

Upload Your Code

Drop your Swift or Kotlin files. We support single files up to 5MB or project ZIPs up to 10MB.

2

Configure Options

Select API mappings for platform-specific features. Choose from curated alternatives or custom implementations.

3

Download & Ship

Get your converted code with README, TODO checklist, and implementation guides. Ready to integrate.

Powerful Features

Everything You Need

Complete app conversion with 107+ patterns and 14 library mappings

82.6% UI Conversion Accuracy

SwiftUI → Jetpack Compose with 28 patterns: grids, forms, animations, gestures, responsive design.
UIKit → Android Views with 26 patterns: controls, layouts, navigation, web views.

Automatic Library Detection

Detects 14 libraries automatically: Alamofire → Retrofit, Realm → Room, RxSwift → Flow, Firebase, Kingfisher → Coil, KeychainAccess, URLSession → OkHttp, and more.

Auto-Generated build.gradle

85%+ compilation rate out of the box. Automatically injects all required dependencies (Retrofit, Room, Compose, Firebase, Coil) with version catalog. Saves 30-60 minutes per conversion.

107+ Conversion Patterns

Business logic: Data models, async/await, reactive patterns.
UI frameworks: LazyVGrid, GeometryReader, Form, animations, gestures.
Libraries: Alamofire, Realm, RxSwift, Firebase, Kingfisher, KeychainAccess, URLSession.

Smart TODO Templates

Copy-paste ready conversion examples for every library pattern. TODOs include working code snippets, not just comments. 28 templates for Alamofire, Realm, RxSwift patterns.

Batch Project Conversion

Upload entire project folders (ZIP up to 10MB). Convert all source files while preserving folder structure. Full README, TODO checklist, and integration guides included. (Professional+ only)

Honest Overview

What Gets Converted

We're transparent about what works and what needs manual attention

Converts Automatically (82.6%+ accuracy)

  • Data models — structs, classes, enums, Codable/Serializable
  • Business logic — algorithms, async/await, reactive patterns (RxSwift/Flow)
  • Networking — Alamofire → Retrofit, URLSession → OkHttp, Firebase SDK
  • Persistence — Realm → Room, KeychainAccess → EncryptedSharedPreferences
  • SwiftUI → Compose — LazyVGrid, Form, animations, GeometryReader, gestures
  • UIKit → Android Views — UITableView, UICollectionView, Auto Layout, navigation
  • Image loading — Kingfisher → Coil with transformations
  • Dependencies — Auto-generated build.gradle with all libraries

Needs Manual Work (with templates provided)

  • Storyboards/XIBs → Use generated XML layouts
  • Complex custom animations → Use provided Compose animation templates
  • Platform-specific Picker/DatePicker → TODO templates with working examples
  • Some nested Form contexts → Copy-paste templates provided
  • Custom drawing/Canvas code → Manual reimplementation needed
Simple Pricing

Plans for Every Team

One-time purchase. Credits never expire.

Starter

Single project conversion

$ 399 one-time
  • Convert Your Core Project (Up to 50 files)
  • Manual file upload
  • Full API mapping
Get Started

Agency

Unlimited projects

$ 1,499 /month
  • Unlimited projects & conversions
  • Team accounts
  • API access
  • Dedicated support
Contact Sales
FAQ

Common Questions

Everything you need to know about NativeBridge

NativeBridge supports Swift (.swift) and Kotlin (.kt) files. You can convert single files up to 5MB or project ZIPs containing multiple files up to 10MB total.

Business logic: ~95% accuracy. UI frameworks: 82.6% accuracy with 28 SwiftUI and 26 UIKit patterns. Overall compilation rate: 85%+ out of the box with auto-generated build.gradle.

14 libraries detected automatically: Alamofire → Retrofit, Realm → Room, RxSwift → Flow, Kingfisher → Coil, KeychainAccess → EncryptedSharedPreferences, URLSession → OkHttp, Firebase, SwiftUI → Jetpack Compose, UIKit → Android Views, and more.

We automatically detect which iOS libraries you're using and generate a complete build.gradle file with all required Android dependencies (Retrofit, Room, Compose, Firebase, Coil, etc.). Just copy it to your project and click "Sync" — saves 30-60 minutes of manual dependency research per conversion.

No. All code processing happens in memory only. We don't store, log, or retain your source code. Files are immediately discarded after conversion.

When we detect platform-specific APIs (like UIKit or Android SDK), we pause and show you options. You can choose from our curated alternatives, use community libraries, or mark for custom implementation.

Yes! Use our batch processing feature to upload a ZIP of your project. We'll convert all source files while preserving your folder structure.

No, credits from one-time purchases never expire. Use them whenever you need.

Ready to Get Started?

Try the live preview above. No signup required.