Best web debugging app
You won't find another app that does web testing amazingly like this app. From the extremely clean interface to its general utility, it is simply the best on the AppStore!
Free
In-App PurchasesWith Ads
About
This app allows developers to test WKWebView and SFSafariViewController configurations in real-time. It offers built-in DevTools for console, network, storage, and performance analysis, along with JavaScript injection and accessibility auditing.
✓Real-time WKWebView configuration testing
✓Built-in DevTools (Console, Network, Storage)
✓JavaScript injection and execution
✓SFSafariViewController testing with content blockers
✓Accessibility auditing (axe-core)
✓Responsive viewport and device emulation
✓Bookmark management
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+1
What's New in Walnut
1.8.16
October 15, 2026
Updated the privacy policy link.
1
Subscriptions & In-App Purchases
$3.99
Remove Ads
Remove all interstitial ads from the app permanently.
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Developer apps
FAQ
What is Walnut: Webview Debug & Test used for?
Walnut: Webview Debug & Test is a developer tool for testing and debugging WKWebView and SFSafariViewController configurations on iOS devices. It provides real-time insights into web content rendering, network requests, and JavaScript execution.
Does Walnut: Webview Debug & Test have ads?
Yes, Walnut: Webview Debug & Test contains advertisements. As a free application with in-app purchases, it utilizes ads to support its development and distribution.
What are the key debugging features in Walnut: Webview Debug & Test?
Key debugging features include a console for capturing logs with CSS styling, network monitoring for fetch/XHR requests with timing data, and storage inspection for cookies and local/session storage.
Can I test accessibility with Walnut: Webview Debug & Test?
Yes, the app includes axe-core based accessibility auditing, allowing developers to check for compliance and identify accessibility issues within web content.
What devices does Walnut: Webview Debug & Test support?
Walnut: Webview Debug & Test is supported on iPhone and iPad devices. It is designed for the iOS platform.
How often is Walnut: Webview Debug & Test updated?
The latest version, 1.8.14, was released on 2026-07-02, indicating recent and ongoing development. Users can expect regular updates to improve functionality and address any issues.
What is the age rating for Walnut: Webview Debug & Test?
Walnut: Webview Debug & Test has an age rating of 17+. This is typical for developer tools that may involve complex technical functionalities.
Can I emulate different devices with Walnut: Webview Debug & Test?
Yes, the app offers viewport and device emulation, including presets for iPhone, iPad, and desktop. This allows for testing responsive design across various screen sizes.
