Network Sniffer vs Async
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Network Sniffer
Analyze your device's network activity to understand app behavior. Identify which apps are connecting to the internet, their data usage, and potential privacy risks. Gain control over your network with detailed visual reports and advanced inspection tools.
- Deep network analysis with visual reports
- Capture HTTP/HTTPS/WebSocket traffic
- External proxy for custom inspection
- JavaScript scripting for custom rules
- Request replay and rewrite
- Real-time speed and data usage widgets
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Network Sniffer is an intelligent network activity analyzer that helps you understand what your apps are really doing online. No technical skills required — easily identify: Which apps are secretly connecting to the internet? Are they sending requests frequently in the background? Is your privacy at risk or data being wasted? You're no longer a passive user — you're in control. Core Features (not limited to): 1. Deep Network Analysis: Visual reports showing which apps are connecting, what they are sending, how often, and whether there’s abnormal or wasteful activity. 2. Network Sniffing: Capture HTTP/HTTPS/WebSocket traffic on your iOS device, with full MITM support for encrypted traffic analysis. 3. External Proxy: Route device traffic through an external proxy server, enabling custom inspection, filtering, and debugging of network requests. 4. JavaScript Scripting: Create custom rules and behaviors using JavaScript to enhance and personalize your network inspection. 5. Request Replays: Resend captured requests to test app behavior under various conditions — ideal for debugging and performance testing. 6. Request/Response Rewrite: Modify headers and bodies of requests and responses on the fly, giving you unmatched control over data flows. 7. Client Proxy: Forward requests from other devices on your local network to this device for centralized debugging. 8. Upstream Proxy Support: Forward HTTP requests to a third-party proxy server for advanced testing or network routing scenarios. 9. Widgets & Dynamic Island Support: Monitor upload/download speeds and data usage in real time via homescreen widgets or the iPhone Dynamic Island. Permissions Network Sniffer requires VPN permission to function. This is only used for local traffic capture — no remote servers or proxying involved. Privacy Notice Network Sniffer does not upload any of your data and does not include any proxy, VPN bypass, or "scientific access" functions. Your data stays on your device. If you have any feedback or questions, please feel free to contact us at miaozhi.ai@gmail.com
Async
Access tech news, quizzes, lessons, project ideas, and conference information. Stay updated with the latest in technology and enhance your skills.
- Tech news updates
- Interactive quizzes
- Learning lessons
- Project ideas
- Conference information
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Actus tech, quizz, leçons, idées de projets et conferences
Screenshots
Verdict
The clearest difference is review sentiment: Async at 86% against Network Sniffer's 71%. Network Sniffer's advantage is chart position (#190 vs unranked). On price, update cadence, ads and in-app purchases 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
Both are free to download. Network Sniffer sells 1 one-off in-app purchase and Async sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.
| Parameter | Network Sniffer | Async |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (188 ratings) — better | — |
| Positive reviews | 71.1% of reviews | 85.7% of reviews — better |
| Number of ratings | 188 — better | — |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | #190 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 65 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | CHENGDU MIAOZHI TECHNOLOGY CO., LTD. | Its Async |
Customer experience
Network Sniffer
Async
In-app purchases
Network Sniffer
- Lifetime Premium$7.99
Async
- Français$2.991 Month
- Français$3.991 Month
- Abonnement Annuel$24.901 Year
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- Async Pro$44.991 Year
Questions
Is Network Sniffer free?
Is Async free?
Do Network Sniffer or Async have ads?
Which is updated more often, Network Sniffer or Async?
Other comparisons
