Comparison

Vulkan Capabilities Viewer vs Proxygen

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

Head to head
About

Vulkan Capabilities Viewer

This tool reports detailed 3D hardware capabilities for developers using Vulkan on iOS devices. It helps ensure compatibility for games and 3D applications across various iOS generations by uploading device reports to a central database.

Highlights
  • Enumerate hardware capabilities
  • Report Vulkan features
  • Upload device reports
  • Check app compatibility
  • Open source
Features
Read full description

For developers using Vulkan layered over the Metal graphics API, this tool enumerates all the hardware capabilities and limitations of the device it is run on. A report of the current device is uploaded to a central Vulkan Capabilities database at gpuinfo.org where other developers can use this information to ensure their games and 3D apps are ready for as wide a variety of iOS device generations as possible. This software is free and OpenSouce licensed and can be obtained here: https://github.com/SaschaWillems/VulkanCapsViewer

About

Proxygen

This tool allows developers to intercept, inspect, and modify HTTP traffic from their iOS devices on a Mac. It offers advanced features like JavaScript scripting for traffic manipulation and a syntax-aware editor for debugging API endpoints.

Highlights
  • Send iOS device traffic to Mac
  • Modify proxied traffic with JavaScript
  • Match and replace headers/body data
  • Syntax highlighting HTTP editor
  • WebSocket and SSE message capture
  • Local VPN extension for proxying
Features
Read full description

Proxygen is the best HTTP proxy tool for testing apps and debugging remote API endpoints right on your iPhone, iPad and Mac. And it’s built to delight you while doing it. Features • Send iOS device traffic to remote Mac • Write JavaScript to modify proxied traffic • Store state in variables for use in Editor • Match and replace headers and body data • Test API endpoints with assertions • Transform data with custom recipes • Syntax highlighting HTTP message editor • Message history with powerful filtering • WebSocket and SSE message capture • Store all data in documents SEND TO MAC Easily capture HTTP messages from an iPhone or iPad on your Mac. Traffic is mirrored to the paired Mac over local network even when the iOS app is not active. The Mac app can intercept and edit data of requests and responses before they are forwarded. No more futzing around with Wi-Fi proxy settings and trusted certificates. SCRIPTING Write JavaScript code that modifies proxied traffic. Scripts have access to requests and responses, letting you rewrite headers, URLs and body content, inject data, or implement conditional logic that goes beyond what static rules can express. SYNTAX AWARE EDITOR Edit requests from the message history or create new to any target. All previously sent requests are kept in the project file so you can return to your work later. The editor uses Tree-sitter for fast language parsing and syntax highlighting. It handles decoding of HTTP content automatically, letting you focus on testing the remote API. SERVER GRADE PERFORMANCE The magic lies in a little custom HTTP proxy that the iOS app runs in a local VPN extension. This proxy was developed using SwiftNIO, a framework for bizarrely fast asynchronous network applications. The proxy can perform TLS Manipulator in the Middle (MitM) to see inside HTTPS connections and apply custom logic to each message. To put it bluntly, you’ve probably never seen a HTTP proxy this fast before. And you likely won’t notice that your web browsing is even proxied at all. PRIVACY Proxygen contains no third party frameworks for crash reporting or analytics. Note that Proxygen is a TLS MitM proxy, which means that it sees HTTPS network traffic in plain text. This data is transferred from the proxy to the Proxygen app and stored as part of the project document. Make sure you handle the documents accordingly, as they may contain sensitive data such as session tokens and login credentials. Privacy policy https://proxygen.app/docs/privacy Terms of Use https://proxygen.app/docs/terms Device Mockup created from https://deviceframes.com/templates/iphone-13

Screenshots

Vulkan Capabilities Viewer1 screens
Proxygen4 screens

Verdict

The call

The clearest difference is rating: Vulkan Capabilities Viewer at 5.0 against Proxygen's 4.3. Vulkan Capabilities Viewer also leads on in-app purchases (none vs 4). Proxygen's advantage is update cadence (every 2 weeks vs every 2 months) and ratings volume (18 vs 5). On price, ads, device support and iOS requirement 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. Proxygen sells 4 in-app purchases, starting at $2.99 per month. Vulkan Capabilities Viewer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Vulkan Capabilities Viewer holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 5 and 18 respectively.

UpkeepUpdate frequency

Vulkan Capabilities Viewer ships an update every 2 months, Proxygen every 2 weeks. The most recent releases landed on September 21, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
Vulkan Capabilities Viewer versus Proxygen: the parameters behind the verdict, then further details
ParameterVulkan Capabilities ViewerProxygen
PriceFreeFree
Rating5.0 (5 ratings) — better4.3 (18 ratings)
Positive reviews—83.3% of reviews
Number of ratings518 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS1716.4 — better
Further details — not scored
Size23 MB37 MB
Age rating4+17+
DeveloperLunarG, Inc.Pasi Salenius

Customer experience

Vulkan Capabilities Viewer

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Proxygen

All ratings18 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews12 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

In-app purchases

None

Vulkan Capabilities Viewer

No in-app purchases

4 purchases

Proxygen

Subscriptions2
  • Proxygen Plus (1 month)14 Days trial$2.991 Month
  • Proxygen Yearly$19.991 Year
One-time2
  • Proxygen for iOS Lifetime$9.99
  • Proxygen Lifetime$39.99

Questions

Is Vulkan Capabilities Viewer free?
Vulkan Capabilities Viewer is free to download, with no in-app purchases.
Is Proxygen free?
Proxygen is free to download, with in-app purchases available.
Which has better reviews, Vulkan Capabilities Viewer or Proxygen?
Vulkan Capabilities Viewer is rated higher. Vulkan Capabilities Viewer averages 5.0 out of 5 from 5 ratings, while Proxygen averages 4.3 from 18 ratings.
Do Vulkan Capabilities Viewer or Proxygen have ads?
Neither Vulkan Capabilities Viewer nor Proxygen shows ads.
Which is updated more often, Vulkan Capabilities Viewer or Proxygen?
Vulkan Capabilities Viewer ships an update every 2 months, and Proxygen every 2 weeks. Most recently, Vulkan Capabilities Viewer was updated on September 21, 2026 and Proxygen on October 8, 2026.

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