# SimKit

> SimKit is an all-in-one iOS developer toolkit for macOS that supercharges the iOS Simulator. It provides network monitoring, screenshot/video/GIF capture, push notification testing, deep link testing, location simulation, accessibility testing, design tools, and performance monitoring — all from a single floating panel.

SimKit is the professional alternative to RocketSim, offering more features at a lower price point with an iOS companion SDK for deep simulator integration.

## Key Features

### Network Monitoring & Debugging
- Real-time HTTP/HTTPS request and response inspection with JSON formatting
- Network throttling profiles: WiFi, LTE, 4G, 3G, Edge (2G), Offline
- Mock API endpoints with URL pattern matching and custom responses
- HAR and cURL export for sharing and debugging
- SimKitSDK companion framework for network interception from within the app

### Screen Capture
- Screenshot capture with device bezels and custom frames
- Video recording (H.264/HEVC) with device frames
- GIF recording (unique feature — not available in RocketSim)
- Customizable status bar: time, battery level, signal strength
- Export formats: PNG, JPG, HEIC, MP4, GIF

### Testing Tools
- Push notification testing with custom JSON payloads, templates, and badge control
- Deep link testing for URL schemes and Universal Links
- Location simulation with 8 preset cities, custom GPS coordinates, and GPX route playback
- Biometric simulation: Face ID and Touch ID success/failure triggers

### Design Tools
- Grid overlay with configurable spacing (4pt–16pt and custom)
- Magnifier with 2x, 4x, 8x, and 16x zoom levels
- Distance measurement between UI elements
- Design comparison overlay with adjustable opacity
- Reference image overlay for pixel-perfect matching

### Accessibility Testing
- Dynamic Type preview across 7 sizes (XS to XXXL)
- Dark/Light mode toggle
- Reduce Motion, Reduce Transparency, Bold Text
- Increase Contrast, Button Shapes, Grayscale, Inverted Colors

### Performance Monitoring
- FPS counter with real-time overlay
- Memory profiling: heap, stack, and leak detection
- CPU usage monitoring
- App launch time tracking
- Exportable performance reports

### Developer Tools
- UserDefaults viewer and editor
- App container file browser
- Permission manager for 14 permission types
- Locale switching with 16 presets
- Timezone testing with 15 presets
- Workflow recording and playback automation

### SimKitSDK (iOS Companion Framework)
- One-line integration via Swift Package Manager
- Network request interception via custom URLProtocol
- Real-time communication with the SimKit macOS app via socket protocol
- Performance monitoring (main thread blocking, memory, launch time)
- Only activates in Simulator — zero impact on production builds

## Pricing
- Free tier: Full access with daily usage limits
- Pro Monthly: $4.99/month
- Pro Yearly: $39.99/year (save 33%)
- Lifetime: $79.99 one-time purchase

## Comparison: SimKit vs RocketSim

| Feature | SimKit | RocketSim |
|---------|--------|-----------|
| Price | $4.99/mo or $79.99 lifetime | $99/year |
| GIF Recording | Yes | No |
| Network Inspector | Full request/response + JSON | Limited |
| iOS Companion SDK | Yes (SimKitSDK) | No |
| Performance Monitoring | FPS, Memory, CPU, Launch Time | Limited |
| Mock Endpoints | URL pattern + custom responses | Limited |
| Workflow Recording | Yes | No |
| Network Throttling | 7 profiles | Limited |

## Documentation
- [Website](https://simkit.dev)
- [SimKitSDK on GitHub](https://github.com/ealtaca/SimKitSDK-Binary)
- [Mac App Store](https://apps.apple.com/en/app/simkit-simulator-toolkit/id6756196371?mt=12)

## Technical Details
- Platform: macOS (requires macOS 14.0+)
- Architecture: SwiftUI + MVVM
- SDK: Swift Package Manager, supports iOS 13+
- Developer: Emre Can Altaca