ProxyDeck — Network Lab
Network diagnostics & proxy
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Free network diagnostics for iPhone. Pair optional Mac Bridge with FastNet Connect for Mac (sold separately). Keep ProxyDeck open while using Mac Bridge.
ProxyDeck is a free network lab and local proxy for iPhone. Check DNS, HTTPS, TCP, and local SOCKS5 paths directly on your device, without a Mac or account.
Looking for the iPhone app that works with FastNet Connect? This is it. ProxyDeck's optional Mac Bridge connects to the separately purchased FastNet Connect app on an Apple Silicon Mac over USB or nearby peer-to-peer Wi-Fi. Mac Bridge requires both apps and works only while ProxyDeck stays in the foreground. It stops when you leave the app.
Run four practical checks against any host:
• DNS resolution — inspect the addresses returned on the current network
• HTTPS request — verify an end-to-end secure request and response
• TCP path — measure connection setup to port 443
• Local SOCKS5 — prove the built-in 127.0.0.1 proxy with a real CONNECT request
Every proxy flow appears in a live connection inspector with its host, port, protocol, state, and traffic totals.
Optional Mac Bridge
If you use FastNet Connect for macOS, ProxyDeck can expose its proxy over USB or a nearby peer-to-peer connection. This companion mode is optional and starts only when you tap Start Mac Bridge. The standalone Network Lab requires no Mac or other app.
Private by design:
• No account
• No analytics or tracking
• No data collection
• No servers operated by us
• Diagnostic checks contact only the host you enter
Mac Bridge is a foreground-only tool and stops when ProxyDeck leaves the foreground.
Ratings & Reviews
This release updates the App Store description and screenshots to clarify how ProxyDeck for iPhone works with the separately purchased FastNet Connect app for Mac. Network Lab continues to work independently. Mac Bridge remains foreground-only. App functionality is unchanged.
The developer, Zheng Jiang, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Zheng Jiang
- Size
- 1.2 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Zheng Jiang