Comparison

API Tool Pro vs Walnut

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

API Tool Pro

Features
Read full description

Network Stream Test is a powerful and user-friendly tool for developers and testers. Effortlessly create, send, and manage HTTP and WebSocket requests, view detailed responses, and organize your API calls with tabs, history, and collections. The app also supports network stream testing, including m3u8 (HLS) video playback, making it ideal for streaming developers. Features include file and image upload, environment variable management, authentication support, and a modern, customizable interface with light and dark themes. Perfect for debugging, learning, and streamlining your API and streaming workflow. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Walnut

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.

Highlights
  • 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
Features
Read full description

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.

Screenshots

API Tool Pro4 screens
Walnut4 screens

Verdict

The call

The clearest difference is in-app purchases: API Tool Pro at none against Walnut's 1. API Tool Pro also leads on ads (none vs shown) and iOS requirement (12.0 vs 18.4). On price, update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Walnut sells 1 one-off in-app purchase. API Tool Pro asks for nothing beyond the download.

UpkeepUpdate frequency

API Tool Pro ships an update every 3 days, Walnut every 4 days. The most recent releases landed on September 29, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 7 level
API Tool Pro versus Walnut: the parameters behind the verdict, then further details
ParameterAPI Tool ProWalnut
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 3 days — betterEvery 4 days
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better18.4
Further details — not scored
Size37 MB28 MB
Age rating4+17+
DeveloperAshen Ishanka CosthaJiwon Park

In-app purchases

None

API Tool Pro

No in-app purchases

1 purchases

Walnut

One-time1
  • Remove Ads$3.99

Questions

Is API Tool Pro free?
API Tool Pro is free to download, with no in-app purchases.
Is Walnut free?
Walnut is free to download, with in-app purchases available.
Do API Tool Pro or Walnut have ads?
Walnut shows ads; API Tool Pro does not.
Which is updated more often, API Tool Pro or Walnut?
API Tool Pro ships an update every 3 days, and Walnut every 4 days. Most recently, API Tool Pro was updated on September 29, 2026 and Walnut on October 9, 2026.

Other comparisons