Features
A complete toolkit for network debugging and analysis. Built for iOS developers who need precise, low-level visibility.
Core capabilities
Device-wide traffic capture
Network Extension-based implementation provides system-level network access. Uses a proxy-only packet tunnel to configure system proxy settings and capture HTTP/HTTPS traffic. Apps must honor the system proxy for their traffic to be captured.
TLS inspection and MITM
On-device certificate authority enables transparent TLS interception. Dynamically generates certificates for intercepted domains to decrypt and inspect HTTPS traffic. All cryptographic operations happen locally with no external dependencies.
WebSocket and SSE support
First-class support for real-time protocols. WebSocket frames and Server-Sent Events are captured, parsed, and displayed with full context. Frame-level inspection shows exact timing and content of bidirectional communication.
Comprehensive request analysis
Complete visibility into every aspect of HTTP transactions. Headers, body, timing breakdown, size analysis, and protocol metadata all accessible in a structured format. Supports multiple body formats with syntax highlighting and advanced protocol features.
Advanced tools
Request Builder and cURL
Built-in request builder to craft and send custom requests. Import cURL commands directly or export requests as cURL. Replay captured requests with full modification capabilities.
Advanced filtering and grouping
Filter traffic by domain, method, status code, content type, or custom patterns. Save filter presets for common debugging scenarios. Group requests by domain or session for better organization.
Full-text search
Search across all captured request and response content. Find specific API endpoints, header values, or body content. Supports regex patterns for advanced queries.
Import and export
HAR import and export for comprehensive traffic analysis. Optional PCAP export of captured HTTP frames for offline analysis. Import/export configuration including rewrite rules, request maps, scripts, and hosts.
PCAP capture
Capture HTTP request/response frames in PCAP format. Useful for offline protocol inspection and debugging. Configurable capture limits to keep files manageable.
Live activity indicators
WidgetKit integration shows real-time network statistics. Live Activities display active request counts and data transfer. At-a-glance visibility without opening the app.
Traffic modification and manipulation
Rewrite rules
Create rules to automatically modify requests and responses. Change headers, URLs, or body content based on patterns. Test different scenarios without modifying application code.
Request maps
Map requests to custom responses or redirect to different endpoints. Mock API responses for offline development. Test edge cases and error handling.
Host overrides
Override DNS resolution to redirect traffic to different servers. Test against staging or development environments. Custom hosts file directly in the app.
Breakpoints
Pause requests before they are sent or responses before they are delivered. Inspect and modify traffic in real-time. Interactive debugging for network issues.
JavaScript scripts
Write custom JavaScript to programmatically modify traffic. Advanced automation for complex modification scenarios. Full access to request and response objects.
Network throttling
Simulate different network conditions with custom profiles. Test application behavior under poor connectivity. Configure bandwidth limits, latency, and packet loss.
Built-in utilities
Base64 encoder/decoder
Encode and decode Base64 strings directly in the app.
URL encoder/decoder
URL encode and decode for query parameters and paths.
JSON formatter
Format and validate JSON with syntax highlighting.
Hash generator
Generate MD5, SHA-1, SHA-256 hashes for strings.
Timestamp converter
Convert between Unix timestamps and human-readable dates.
Certificate guide
Step-by-step guide for CA installation and trust setup.
Performance and privacy
Optimized for efficiency
Designed to minimize battery and performance impact during capture sessions. Efficient packet processing and memory management allow for extended debugging sessions.
Privacy-first architecture
All traffic capture and analysis happens entirely on-device. No data leaves your device. No telemetry. No analytics. Complete control over your debugging data.
Built with modern iOS technologies
Leverages Apple's latest frameworks and APIs for reliability and performance.