API Zen vs API Tool Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
API Zen
Read full descriptionHide full description
API Zen brings the convenience of HTTP API endpoint testing on the go. With its intuitive request composer and detailed response information, it helps developers test endpoints with ease. Main features • Simple and intuitive request composer and viewer • Supports headers, request parameters, request body with JSON, XML, raw input, forms with file, image attachments, multipart and binary data • Organize endpoints into workspaces and projects • Enable iCloud syncing when creating a new workspace. If syncing is disabled workspace will be created on device only. • Seamless switching between local and iCloud workspaces • Option to add custom HTTP methods per project • Detailed response information which includes headers, cookies, metrics and connection information • View raw response with syntax highlighting • Preview HTML response output as web page • View all response history • SSL validation per request • Environment group with variables per workspace with option to select different environment per request • Supports dark mode • Import/Export workspace data API Zen is free for use. The app accepts optional donations which supports the development work.
API Tool Pro
Read full descriptionHide 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/
Screenshots
Verdict
The clearest difference is in-app purchases: API Tool Pro at none against API Zen's 3. API Tool Pro also leads on update cadence (every 3 days vs every 2 months). 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
Both are free to download. API Zen sells 3 one-off in-app purchases. API Tool Pro asks for nothing beyond the download.
API Zen ships an update every 2 months, API Tool Pro every 3 days. The most recent releases landed on September 15, 2026 and June 26, 2026 respectively.
| Parameter | API Zen | API Tool Pro |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Jaseem Valiya Valappil | Ashen Ishanka Costha |
In-app purchases
API Zen
- Thanks$3.99
- Thank you$5.99
- Thank you very much$7.99
API Tool Pro
No in-app purchases








