# Walnut: Webview Debug & Test — Test WKWebView & SafariVC

> Real-time testing and debugging tool for WKWebView and SFSafariViewController on iOS. (iPhone/iPad app by Jiwon Park.)

- Source: https://appshunter.io/ios/app/walnut-webview-debug-and-test/id6755930250 (this page in markdown: same URL + `.md`)
- Developer: [Jiwon Park](https://appshunter.io/developer/1842841535)
- Category: Developer Tools, Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 17+
- Requires: iOS 18.4 · 28 MB
- Languages: Korean, Greek, Dutch, Danish, German (Germany), Russian, Romanian, Malay, Vietnamese, Norwegian Bokmål and 23 more
- Released: 2025-12-22
- Data updated: 2026-09-07
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/walnut-webview-debug-and-test/id6755930250/reviews.md

## What is Walnut?

The ultimate developer tool for testing WKWebView and SFSafariViewController configurations in real-time.

KEY FEATURES

WKWebView Testing
• Real-time configuration testing with 20+ options
• Built-in DevTools: Console, Network, Storage, Performance, Sources, Accessibility
• JavaScript injection and snippet execution
• Custom User-Agent emulation
• Viewport and device emulation

SFSafariViewController Testing
• Native Safari experience with content blockers
• Reader mode and responsive size control
• Customizable bar colors and dismiss button styles

Developer Tools
• Console: Capture console.log with %c CSS styling support
• Network: Monitor fetch/XHR requests with timing data
• Storage: View/edit localStorage, sessionStorage, cookies
• Performance: Web Vitals (LCP, FID, CLS) and Navigation Timing
• Sources: DOM tree inspection, stylesheets, scripts
• Accessibility: axe-core based accessibility auditing

Additional Features
• Bookmark management for quick URL access
• Responsive viewport resizing (iPhone, iPad, Desktop presets)
• Screenshot capture
• API capability detection
• Dark mode support

Perfect for iOS developers who need to test web content rendering, debug JavaScript, analyze network requests, and ensure accessibility compliance.

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/walnut-webview-debug-and-test/id6755930250/reviews.md

### 5/5 — Best web debugging app

*2026-07-03*

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!

## Frequently asked questions about Walnut

### 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.

## Version history (last 5 releases)

### 1.8.14 — 2026-07-02

Improved Page Startup Setup with localized text, more reliable bridge mocking, and fixes for message capture.

### 1.8.13 — 2026-06-22

Improved SafariVC color handling on iOS 26 so it no longer conflicts with Liquid Glass.

### 1.8.12 — 2026-06-08

Improved SafariVC color handling on iOS 26 so it no longer conflicts with Liquid Glass.

### 1.8.11 — 2026-02-27

- Fixed independent log retention settings between Console and Network.
- Fixed per-page and same-origin clearing behavior on navigation.
- Improved request body detection (JSON/FormData/stream types) and Eruda load stability.

### 1.8.9 — 2026-02-05

Bug fixes and improvements:
- Fixed search navigation for deeply nested elements
- Entire path now expands at once when navigating to matches

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| [WebView TestKit](https://appshunter.io/ios/app/webview-testkit/id6746498691) | — | Free | Developer Tools |
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## More apps by Jiwon Park

- [Abaco - Flash Mental Math](https://appshunter.io/ios/app/abaco-flash-mental-math/id6753171585)
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- [Nball - Bulls and Cows](https://appshunter.io/ios/app/nball-bulls-and-cows/id6759275841)

All apps by Jiwon Park: https://appshunter.io/developer/1842841535

## Related topics

[webview testkit](https://appshunter.io/ios/topics/webview-testkit)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*