API Client vs ByteSniffer
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
API Client
Test REST APIs directly from your mobile device. Paste URLs, select methods, and view detailed responses including status codes, headers, and formatted JSON. Manage environments, save requests, and even import/export cURL commands.
- Paste URL and send requests
- Smart JSON viewer with search
- Environment management
- Collections and history
- cURL import and export
- API monitoring
- Test suites and assertions
- API docs generator
Read full descriptionHide full description
Test any API right from your phone. Paste a URL, hit send, see the response. API Client is a lightweight REST and HTTP tester. No account needed. No cloud sync. No setup. Just open the app and start testing. โธ JUST PASTE & SEND Enter any URL, pick a method (GET, POST, PUT, PATCH, DELETE), and tap Send. See status codes, response time, headers, and formatted JSON โ all in one view. โธ SMART JSON VIEWER Collapsible JSON tree with search, tap-to-copy, and syntax highlighting. Format or minify JSON with one tap. Build request bodies visually without typing raw JSON. โธ ENVIRONMENTS Switch between development, staging, and production with one tap. Each environment stores its own base URL, bearer token, API key, and custom headers. Use {{variables}} across all requests. โธ COLLECTIONS & HISTORY Save requests to collections. Pin favorites for quick access. Full history grouped by date with one-tap rerun. Search across all saved requests. โธ cURL IMPORT & EXPORT Paste any cURL command to import instantly. Export any request as cURL to share with your team or use in terminal scripts. โธ API MONITORING Set up automatic health checks for your endpoints. Get push notifications when an API goes down or degrades. Track incidents and recovery times. โธ TEST SUITES & ASSERTIONS Group requests into test suites. Add response assertions โ validate status codes, check JSON fields, verify headers. Run all tests with one tap. โธ API DOCS GENERATOR Generate shareable PDF documentation for any endpoint โ method, URL, headers, body, response samples, and status codes included. WORKS GREAT FOR โข Developers testing REST APIs from anywhere โข Students learning HTTP methods and API concepts โข QA engineers validating endpoints โข DevOps checking microservice health โข Anyone who needs an API client on mobile WHY API CLIENT? This app runs entirely on your device. Your API keys and tokens stay on your phone. No sign-up required โ just open and test. SUBSCRIPTION AND PRICING โข RESTPilot Pro Lifetime โ $9.99, one payment โข RESTPilot Pro Monthly โ $1.99 per month, renews automatically โข Payment is charged to your Apple Account at confirmation of purchase โข A subscription renews unless it is cancelled at least 24 hours before the end of the current period โข Manage or cancel anytime in your Apple Account settings Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cosmovex.web.app/apps/restpilot/privacy-policy
ByteSniffer
This tool allows developers to capture, inspect, and modify network traffic on their mobile devices. It enables debugging, API testing, and troubleshooting by providing features like request rewriting, session history, and scripting.
- HTTP capture and session history
- Request and response inspection
- Request and response rewrite tools
- JavaScript scripting support
- HTTPS MITM debugging
- API debugging and testing
Read full descriptionHide full description
ByteSniffer is a professional network debugging tool designed for iOS developers, QA engineers, and networking professionals. It supports real-time capture and analysis of HTTP/HTTPS, SSE, WebSocket, TCP, and UDP traffic. You can inspect request headers, response content, real-time messages, bidirectional raw data, and data in multiple formats including Hex, Text, and JSON. ByteSniffer also provides useful tools such as Host filtering, capture history, full-text search, sharing and export, request replay, content rewriting, breakpoints, and JavaScript scripting. These features help you quickly troubleshoot API errors, connection issues, and data transmission problems. HTTPS and WSS traffic analysis requires installing and trusting the MITM certificate provided by the app. Some advanced features require Pro access. Please use ByteSniffer only with applications and network environments that you own or are authorized to test. Membership Purchase: Unlock permanent access for only CNY 19.9, including MITM, HTTPS, SSE, WebSocket, TCP, UDP, Replay, Rewrite, Breakpoints, and Scripts โ for about the price of a cup of milk tea. Privacy Policy: https://www.kdocs.cn/l/cbOGcxNm6ic9 User Agreement: https://www.kdocs.cn/l/cnVXUBVNwGOd
Screenshots
Verdict
The clearest difference is review sentiment: ByteSniffer at 50% against API Client's 0%. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. API Client sells 2 in-app purchases, starting at $1.99 per month and ByteSniffer sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
API Client ships an update every 10 days, ByteSniffer every 8 days. The most recent releases landed on September 25, 2026 and September 20, 2026 respectively.
| Parameter | API Client | ByteSniffer |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | 50.0% of reviews โ better |
| Update frequency | Every 10 days | Every 8 days โ better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 โ better | 15.6 |
| Further details โ not scored | ||
| Size | 41 MB | 22 MB |
| Age rating | 17+ | 4+ |
| Developer | Sahana A S | ๅญ้พ ้ |
Customer experience
API Client
ByteSniffer
In-app purchases
API Client
- RESTPilot Pro Monthly$1.991 Month
- Ad Free experience$9.99
ByteSniffer
- Continuous monthly subscription$1.991 Month
- Continuous seasonal subscription$3.993 Months
- Continuous annual subscription$12.991 Year
- Permanent Pember$2.99









