PonyDebugger

PonyDebugger is a free remote debugging toolset for native iOS apps. An app client connects to the ponyd gateway, which provides debugging views through Chrome Developer Tools. Developers can route network traffic through a proxy and inspect it with Chrome’s Network tools, including HTTPS traffic. The iOS client automatically proxies requests made through NSURLConnection and NSURLSession, including those from AFNetworking and other libraries using those APIs. Developers can register managed object contexts and browse Core Data entities and objects in read-only stores. The view hierarchy display can highlight matching views, edit displayed attributes, and remove nodes. Remote logging supports text and recursive inspection of object properties. Setup requires adding the client to an app and connecting it to the gateway; the quick start requires Xcode Command Line Tools. The gateway listens on localhost port 9000 by default. The client requires iOS 5.0 or above and uses ARC and SocketRocket. The project is licensed under Apache License 2.0.

PonyDebugger provides several remote debugging views through Chrome Developer Tools, but setup involves both an app client and gateway. The README cautions that automatic forwarding of all traffic should be limited to debug builds.

PonyDebugger suits developers debugging native iOS applications who want network, Core Data, view hierarchy, and remote logging tools in Chrome Developer Tools.

Overview

PonyDebugger is a free toolkit for inspecting native iOS apps through Chrome Developer Tools, aimed at developers who want network, interface, data, and logging views in one debugging workflow. Its range of views is compelling for that narrow job, but integrating an app client and running a gateway adds setup that simpler, in-editor debugging may avoid.

Key features

• Network inspection: The client proxies requests made through NSURLConnection and NSURLSession, including those used by AFNetworking and other libraries built on the same APIs. Since it forwards traffic rather than sniffing it, HTTPS requests can be inspected. The broad automatic-forwarding option swizzles methods from private APIs, so keep it to debug builds; this is not a production monitoring tool.
• Core Data browsing: Register managed object contexts to inspect entities and managed objects. The stores are read-only, which suits diagnosis rather than data editing. CoreData.framework must be linked even if you do not use this feature, an avoidable dependency for teams seeking only the other debugging views.
• View hierarchy: Chrome Developer Tools can show the app’s hierarchy, highlight corresponding views, edit displayed attributes, and remove nodes. That makes it useful for tracking down layout and structure issues, though it is not a substitute for a full interface-design workflow.
• Remote logging: PDLog and PDLogObjects send text and recursively inspect object properties remotely, adding a way to examine runtime state alongside the other views.
• Client and gateway: Install the iOS client through CocoaPods or manually, then connect it to the gateway, whose userland setup uses virtualenv. The quick start requires Xcode Command Line Tools. The gateway serves Chrome Developer Tools and listens on localhost port 9000 by default; configuring it to listen on 0.0.0.0 allows access from another device or computer, but changes the default security boundary.

Pricing

PonyDebugger is free: the PonyDebugger plan costs nothing and includes the iOS client and gateway server under the Apache License 2.0. There are no paid tiers to weigh against a free cap or seat limit. The value is strongest for developers who can absorb the integration and gateway work; a zero price does not remove that operational cost.

Platforms

The project centers on native iOS apps. Its documented client requires iOS 5.0 or above, uses ARC and SocketRocket as a WebSocket client, and is associated with Objective-C and Python. Chrome Developer Tools supplies the browser interface, while the gateway can run self-hosted. Although macOS and web appear among supported targets, PonyDebugger is described as an iOS app debugging tool, not as a general debugger for those platforms.

Who it's for

Choose PonyDebugger if you maintain a native iOS app and want remote access to proxied requests, read-only Core Data inspection, view hierarchy tools, and object logging in a Chrome-based interface. It is less suitable if you need a debugger without app integration, need to edit Core Data stores, or want automatic traffic forwarding in a production build. Teams should also account for linking CoreData.framework whether or not they browse Core Data.

Pros and cons

• Pro: Network, view hierarchy, Core Data, and remote logging views come together in one toolset, reducing the need to switch among separate inspection approaches.
• Pro: Forwarding supports HTTPS inspection, and common networking built on NSURLConnection or NSURLSession is covered.
• Con: The app client and gateway both need setup, and the quick start depends on Xcode Command Line Tools.
• Con: Automatic forwarding of all traffic swizzles private APIs and is explicitly a debug-build-only choice.
• Con: Core Data inspection is read-only, and the framework must be linked even when that feature is unused.

Alternatives

Browse more debuggers if PonyDebugger’s iOS focus or two-part setup does not fit. FLEX is another free iOS debugging library, and may be a better fit if you want an iOS-only alternative rather than a client-and-gateway workflow. LLDB is a free open-source debugger spanning Android, iOS, Linux, macOS, and Windows, so consider it when you need broader platform coverage. RenderDoc is a free MIT-licensed option for Android, Linux, and Windows. IDA Pro offers a free tier with x86-32 and x86-64 disassembly, two cloud-based decompilers, and a named license; its IDA Pro Essential plan costs $1,099, making it a different choice for that disassembly workflow. Perl Debugger is included with Perl and requires the program to compile correctly before debugging. pyOCD is a free open-source project under Apache 2.0. Black Magic Debug is a free JTAG/SWD debugger for embedded microcontrollers that requires compatible probe hardware and a suitable toolchain. FlowStorm is free and open source, with no money involved and permission to use it as you like.

Verdict

PonyDebugger is a strong fit for native iOS developers who want several remote inspection views together and are comfortable maintaining both an app client and gateway. Its best reason to choose is the combination of HTTPS-capable network proxying with interface, data, and logging inspection; look elsewhere if you need a simpler setup or traffic forwarding suitable for production.