sing-box

🌟 sing-box is an emerging cross-platform proxy software developed in Go, providing modern proxy solutions on iOS platform and representing an excellent example of free and open-source proxy tools.

✨ Product Features

🎯 Core Advantages

• 🆓 Open Source & Free: Completely open source with free iOS version

• 🚀 High Performance: Developed in Go language for excellent performance

• 🌍 Cross-Platform: Unified configuration format for consistent multi-platform experience

• 🔄 Continuous Updates: Active development team with rapid feature iteration

• 🛡️ Modern: Adopts latest networking technologies and security standards

🔗 Protocol Support

Protocol Type	Support Status	Feature Description
🔒 Shadowsocks	✅	Full version support, performance optimized
🌟 VMess (V2Ray)	✅	Complete functionality support
⚡ VLESS	✅	Lightweight protocol
🛡️ Trojan	✅	TLS camouflaged traffic
🚀 Hysteria	✅	QUIC high-speed protocol
🌊 TUIC	✅	New QUIC-based protocol
🔐 WireGuard	✅	Modern VPN protocol
🧦 SOCKS5	✅	Universal proxy protocol

🛠️ Feature Highlights

Feature Module	Specific Functions	Advantages
🌐 Network Core	TUN mode, system proxy	Global traffic takeover
📡 DNS Service	Built-in DNS server	Prevent DNS leaks
🎯 Routing System	Flexible rule engine	Precise traffic splitting
📊 Traffic Monitoring	Real-time statistics and analysis	Detailed usage information
🔧 Configuration Management	JSON configuration format	Standardized configuration
🔄 Hot Reload	Dynamic configuration updates	No service restart needed

📱 System Requirements

• Minimum Version: iOS 15.0 or higher

• Recommended Version: iOS 16.0 and above

• Compatible Devices: iPhone / iPad

• Storage Requirement: About 100MB available space

• Memory Requirement: 3GB RAM or above recommended

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📥 Download & Installation

🏪 App Store Information

🎉 Great News

• sing-box iOS version is completely free

• Not available in China mainland App Store

• Requires non-China mainland Apple ID

• Excellent value compared to other paid apps

💰 Price Comparison

App	Price	Open Source	Feature Completeness
sing-box	Free	✅ Open Source	⭐⭐⭐⭐
Shadowrocket	$2.99	❌ Closed Source	⭐⭐⭐⭐
Quantumult X	$7.99	❌ Closed Source	⭐⭐⭐⭐⭐
Surge	$49.99	❌ Closed Source	⭐⭐⭐⭐⭐

🆚 Advantage Comparison

Comparison with other clients:

Feature Comparison	sing-box	Shadowrocket	Quantumult X
🏷️ Price	Free	$2.99	$7.99
🔓 Open Source	✅	❌	❌
🚀 Performance	⭐⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐
📚 Ease of Use	⭐⭐⭐	⭐⭐⭐⭐⭐	⭐⭐⭐
🔧 Functionality	⭐⭐⭐⭐	⭐⭐⭐	⭐⭐⭐⭐⭐
🔄 Update Frequency	⭐⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐

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⚠️ Usage Notes

🆓 Free Software Advantages

🎉 Important Notice

• sing-box iOS version is completely free

• Based on open source project with transparent and auditable code

• No need to worry about payment and subscription issues

• Continuous feature updates with community-driven development

🎯 Target Users

📋 Recommended Users

• ✅ Budget-Conscious: Want free but powerful tools

• ✅ Tech Enthusiasts: Love open source software and follow technology development

• ✅ Privacy-Focused: Prefer transparent and auditable code

• ✅ Performance Seekers: Need high-performance proxy solutions

📚 Technical Support Scope

📋 Service Description

• ✅ Basic Configuration: Configuration import and connection tutorials provided

• ✅ Common Issues: Basic usage questions answered

• ❌ Advanced Configuration: Complex routing and rule configuration not provided

• ❌ JSON Editing: Manual configuration file editing guidance not provided

• 💡 Learning Resources: Recommend official documentation and community support

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🚀 Usage Tutorial

📋 Prerequisites

Before starting, please ensure:

• ✅ sing-box downloaded and installed from App Store

• ✅ Valid proxy service configuration available

• ✅ Basic understanding of JSON configuration format

• ✅ Device network connection is normal

🛠️ Basic Configuration

🔗 Configuration Import Process

Step 1: Launch Application

Open sing-box and enter the main interface:

Application Main Interface

💡 First launch will require permission setup, please follow the prompts

Step 2: Add Configuration

Click the "+" button to add new configuration:

Add Configuration

Step 3: Import Method

Choose configuration import method (URL, file, or manual):

Import Method

Step 4: Configuration Details

Enter configuration information and save:

Configuration Details

Step 5: Enable Connection

Select configuration and start proxy service:

Enable Connection

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🎛️ Advanced Features

🌐 TUN Mode

• Global Proxy: System-level traffic interception

• DNS Hijacking: Built-in DNS server prevents leaks

• Route Table: Custom routing rules for precise control

📊 Traffic Monitoring

• Real-time Statistics: Live traffic speed and usage monitoring

• Connection Details: View active connections and protocols

• Historical Data: Traffic usage history and analytics

🔧 Configuration Management

• JSON Format: Standard configuration file format

• Hot Reload: Dynamic configuration updates without restart

• Profile Switching: Quick switching between multiple configurations

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❓ Frequently Asked Questions

🔧 Configuration Issues

Q: Configuration import failed?

A: Troubleshooting steps:

• Verify configuration file format is correct JSON

• Check network connectivity for URL imports

• Ensure proxy server information is accurate

• Try manual configuration entry

Q: Connection established but no internet access?

A: Common solutions:

• Check TUN permission is granted

• Verify DNS settings are correct

• Test with different proxy nodes

• Review routing rules configuration

📱 Performance Issues

Q: High battery consumption?

A: Optimization tips:

• Disable unnecessary routing rules

• Use direct connection for local traffic

• Reduce logging verbosity

• Close unused features

Q: Slow connection speeds?

A: Performance optimization:

• Select geographically closer servers

• Use appropriate encryption methods

• Check local network quality

• Optimize routing configuration

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🔗 Related Resources

📚 Official Resources

• 🏠 sing-box Official GitHub

• 📖 Configuration Documentation

• 💬 Community Discussions

🌟 Community Resources

• 🔧 Configuration Examples

• 📜 Rule Sets

• 🎯 Tutorial Collection

🛠️ Tools & Utilities

• 🔧 Configuration Converter

• 📊 Speed Testing

• 🎯 Rule Generator

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💡 Usage Tips

⚡ Performance Optimization

1. Efficient Routing: Use precise rules to minimize unnecessary processing

2. DNS Configuration: Use reliable DNS servers for better resolution

3. Regular Updates: Keep both app and configurations up to date

🛡️ Security Best Practices

1. Configuration Security: Only use trusted configuration sources

2. Privacy Protection: Review and understand what data is processed

3. Update Vigilance: Keep software updated for latest security patches

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🎯 Summary & Evaluation

✅ Advantages

• 🆓 Completely Free: No cost barrier for high-quality proxy tool

• 🔓 Open Source: Transparent code for security and trust

• 🚀 High Performance: Go language provides excellent speed and efficiency

• 🔄 Active Development: Regular updates and feature improvements

❌ Considerations

• 📚 Learning Curve: JSON configuration may be challenging for beginners

• 🎨 Interface Simplicity: Less polished UI compared to paid alternatives

• 📖 Documentation: Community-driven support may vary in quality

• 🔧 Advanced Features: Some enterprise features may be limited

🎯 Recommended For

• 🆓 Budget Users: Those seeking free but powerful proxy solutions

• 🔓 Open Source Advocates: Users who prefer transparent and auditable software

• 🚀 Performance Enthusiasts: Those who prioritize speed and efficiency

• 🌍 Cross-Platform Users: Those using multiple operating systems

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📅 Last Updated: July 10, 2025 | 📦 Applicable Version: sing-box for iOS 1.8.0