ApiCatcher is a user-friendly mobile HTTP/HTTPS/WS/WSS packet capture and debugging tool.
[Key Features]
- Traffic Capture: Capture HTTP, HTTPS, WS, and WSS traffic (WS: WebSocket; WSS: WebSocket over TLS).
- Data Manipulation: Copy, export, encrypt, and decrypt Query Params, Headers, and Bodies.
- Host Filtering: Configure blacklists and whitelists to filter captured hosts.
- Request Replay: Modify and resend requests (WS/WSS replay serves as a debugging tool).
- Chain Replay: Schedule and execute multiple requests sequentially based on dependencies, with support for dynamic parameter injection (HTTP/HTTPS only).
- Scheduled Replay: Automate and trigger request replays at set intervals (HTTP/HTTPS only).
- Auto-Generated API Docs: Automatically generate API documentation and export directly to Postman or Apifox (HTTP/HTTPS only).
- Rewrite Rules: Mock responses, redirect requests, modify requests/responses, or drop requests/responses (HTTP/HTTPS only).
- Scripting Engine: Extend capabilities with script plugins to flexibly modify requests and responses on the fly (HTTP/HTTPS only).
- History Export: Batch export captured traffic as HAR files (HTTP/HTTPS only).
- API Scanner: Run rule-based vulnerability/error detection and statistics on captured traffic, with support for custom scanning rules (HTTP/HTTPS only).
- Media Export: Batch export images and videos, with automatic merging for segmented download requests.
- Real-Time Sync: Stream captured HTTP/HTTPS traffic instantly to ApiCatcher Desktop for advanced analysis and debugging.
[How It Works]
ApiCatcher establishes a local VPN connection on your device to route all network traffic through a local Man-in-the-Middle (MITM) service. As long as the VPN is active, ApiCatcher can capture any HTTP/HTTPS/WS/WSS traffic passing through Wi-Fi or cellular data.
[Data Privacy & Security]
ApiCatcher's root certificate is a self-signed certificate generated entirely on your own device. All captured HTTP/HTTPS/WS/WSS data is stored locally on your device and is never uploaded to any remote servers.
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
• Supports capture WS/WSS
• Supports WebSocket debugging
• Added connection establishment and TLS handshake time statistics
• Provides a hexadecimal view for inspecting binary data
• Fixed bug where searching by request body or response body returned inaccurate results due to uncompressed body data
• Fixed other known issues
Version 3.0
The developer, Nanning Signalling Network Technology Co., Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Provider
Nanning Signalling Network Technology Co., Ltd
Size
53.3 MB
Category
Developer Tools
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.