CodeViewer vs API Zen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CodeViewer
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支持主流编程语言代码高亮
API Zen
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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.
Screenshots
Verdict
The clearest difference is price: API Zen at Free against CodeViewer's $0.29. API Zen also leads on update cadence (every 2 months vs every 8 months) and iOS requirement (13.0 vs 17.2). CodeViewer's advantage is in-app purchases (none vs 3). On ads and device support 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
API Zen is free to download; CodeViewer costs $0.29 up front. API Zen sells 3 one-off in-app purchases. CodeViewer asks for nothing beyond the download.
CodeViewer ships an update every 8 months, API Zen every 2 months. The most recent releases landed on October 30, 2026 and October 2, 2026 respectively.
| Parameter | CodeViewer | API Zen |
|---|---|---|
| Price | $0.29 | Free — better |
| Update frequency | Every 8 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | 健 王 | Jaseem Valiya Valappil |
In-app purchases
CodeViewer
No in-app purchases
API Zen
- Thanks$3.99
- Thank you$5.99
- Thank you very much$7.99









