Walnut: Webview Debug & Test

Test WKWebView & SafariVC

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

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.

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

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

Version 1.8.14

The developer, Jiwon Park, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers
    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • VoiceOver

    • Voice Control

    • Dark Interface

    • Differentiate Without Color Alone

    • Sufficient Contrast

Information

Seller
  • Jiwon Park
Size
  • 29.4 MB
Category
  • Developer Tools
Compatibility
Requires iOS 18.4 or later.
  • iPhone
    Requires iOS 18.4 or later.
  • iPad
    Requires iPadOS 18.4 or later.
  • Mac
    Requires macOS 15.4 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.4 or later.
Languages
English and 32 more
  • English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
Age Rating
16+
  • 16+
  • Learn More
  • Contains
    Unrestricted Web Access
    Advertising
In-App Purchases
Yes
Copyright
  • © 2026 Jiwon Park
  • Developer Website
  • Privacy Policy

    • More by Jiwon Park

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