$5.99 Free
In-App Purchases

Lowest price: $2.99 4 years ago (-%)


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Details

  • Released
  • Updated
  • July 11, 2022
  • July 23, 2026

Features

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About

This app is a powerful network analysis tool for proxying, intercepting, and modifying network traffic. It offers comprehensive recording of various protocols and supports extensive rule types for flexible traffic management. Users can decrypt HTTPS, rewrite URLs and headers, and utilize JavaScript for custom operations.

Network traffic recording (TCP, UDP, DNS, HTTP)
Extensive rule types for traffic control
Multiple proxy protocol support
HTTPS traffic decryption
URL and header rewriting
JavaScript for custom operations
iCloud configuration sync
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What's New in Egern

2.20.0

July 23, 2026

New Features · Added Snell proxy protocol (v1–v5) with connection reuse pooling, obfs, and ShadowTLS; parses Clash (`type: snell`) and Surge configs · Added SSH outbound proxy with password / private key authentication and host key verification · Added SOCKS5 over TLS protocol · Added gRPC (Gun) transport for VMess / VLESS, with faster downloads on high-latency links · Added REALITY to Trojan, AnyTLS, and HTTPS with X25519MLKEM768 post-quantum key exchange; importable from share links and Clash subscriptions · Added server certificate SHA-256 fingerprint pinning for Trojan, AnyTLS, HTTPS, Hysteria2, TUIC, and VMess (HTTP/2, TLS, WSS) · All policy group types can now attach subscription URLs directly, mixing static and subscription proxies — no separate external group needed · Added round-robin algorithm to load balance groups · Added per-proxy IP version strategy (`ip_version`) for domain servers: dual stack, IPv4/IPv6 only, or IPv4/IPv6 preferred · Added "Close Connections on Policy Change" option to close connections still on the old proxy when a group's selection changes · Added listen-port rule for routing by local HTTP/SOCKS proxy port · Added DNS over TCP upstreams via `tcp://` · Added profile history: automatic snapshots before every edit, update, or overwrite, with preview and one-tap restore · All-new Storage page with a full usage breakdown of caches, logs, traffic records, GeoIP databases, script data, and more · Added notification history: every notification is recorded (even suppressed or auto-dismissed ones), viewable in Settings → Notifications · Added connection deep links with live-refreshing detail · Connection detail now shows IP info and the matched MITM rule and module · Widgets can now render SVG vector graphics · MITM CA certificates can now be installed on other devices Improvements · Smart groups now remember real-connection failures: proxies that test fine but don't work are deprioritized, and latency is re-tested right after failover · Hysteria2 supports TCP Fast Open; AnyTLS can skip TLS certificate verification · Requests now fail fast when there's no network (e.g. airplane mode) instead of retrying and draining the battery · Scripts can make far more concurrent HTTP requests, lifting WebView's ~6-per-host connection limit · Profile errors now point to the exact field and reason instead of an inaccurate line number · Logs are searchable; DNS forwarding rule sets can be previewed as YAML/text; module icons can be customized via long-press · Reused HTTP connections show policy, rule, and IP info; traffic now uses binary units (KiB/MiB) Bug Fixes · Fixed large uploads stalling on some proxy protocols, and connections not falling back to a working IP when a domain resolves to multiple IPs · Fixed profile changes and manually updated resources not taking effect immediately · Fixed DNS hijacking mistakenly capturing non-DNS UDP traffic (e.g. SNTP) · Fixed logical rules (AND/OR/NOT) with unsupported sub-rules matching all traffic; they are now ignored entirely · Fixed Hysteria2 skip-cert-verify not applying, occasional false failures in Hysteria2 / TUIC latency tests, and inflated HTTP proxy latency results · Fixed VLESS `encryption: none` being dropped from Clash subscriptions, and VLESS / VMess links being misidentified · Fixed bare keys dropped from INI `#!arguments`, and YAML module argument placeholders in numeric fields · Fixed IPv6 availability not updating after switching networks · Fixed inaccurate protocol, policy, and failed filters on the Connections page · Fixed very large values (e.g. `999999999999999` for "never update") in interval/timeout fields being silently ignored or breaking YAML profile parsing · Fixed Show IP Info bypassing proxy DNS for domain proxies, truncated latency labels, and blank space in the editor after backgrounding with the keyboard up

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User reviews

tailnet

Hello, developer. When can the tailnet LAN connection function be added?

很好

终于找到合意的工具了!界面美观,视觉体验很棒。对比其他同类客户端,支持协议覆盖面更广,功能完善。整体逻辑顺手,实用性拉满,长期使用下来很满意。

Отличный клиент

Клиент замечательный, статистика просто шикарно. Есть очень над чем поработать, сделать добавление прокси из буфера обмена по сформированной ссылке, исправить добавление прокси из QR кода

Hy2协议

Hy2协议完全不连通,根本没法用,原来以为各种强兼loon和surge,结果连个hy2协议都没法用,好几个机场都没办法连通,希望开发者好好修修吧

Zoned-Out Dev Living in His Own World, Ignores All Feedback

This guy’s completely zoned out in his own world building stuff and doesn’t even look at feedback when problems pop up

Developer apps

FAQ

What does Egern do?

Egern is a comprehensive networking tool designed for proxying, intercepting, and modifying network traffic. It allows users to record various network protocols, apply flexible rules, and customize network requests and responses.

What are the key features of Egern?

Key features include recording TCP, UDP, DNS, and HTTP traffic, support for a wide range of rule types, multiple proxy protocols, HTTPS decryption, URL and header rewriting, JavaScript customization, and iCloud configuration syncing.

Is Egern free to use?

The application is free to download and use, but it offers in-app purchases. This suggests that while core functionality may be available for free, certain advanced features or enhancements might require a purchase.

What kind of network traffic can Egern intercept and modify?

Egern can intercept and modify TCP, UDP, DNS, and HTTP network traffic. It supports a vast array of rule types, including domain-based, geo-location, IP CIDR, URL regular expressions, and protocol-specific rules, allowing for granular control.

How does Egern help with network debugging?

Egern assists in network debugging by providing detailed traffic recording and analysis capabilities. Users can intercept and inspect network requests and responses, rewrite them, and even use JavaScript for custom operations, offering deep insights into network behavior.