Comparison

CodeViewer vs API Zen

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CodeViewer

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支持主流编程语言代码高亮

About

API Zen

Features
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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

CodeViewer4 screens
API Zen4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 2 level
CodeViewer versus API Zen: the parameters behind the verdict, then further details
ParameterCodeViewerAPI Zen
Price$0.29Free — better
Update frequencyEvery 8 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.213.0 — better
Further details — not scored
Size1 MB7 MB
Age rating4+4+
Developer健 王Jaseem Valiya Valappil

In-app purchases

None

CodeViewer

No in-app purchases

3 purchases

API Zen

One-time3
  • Thanks$3.99
  • Thank you$5.99
  • Thank you very much$7.99

Questions

Is CodeViewer free?
CodeViewer costs $0.29, with no in-app purchases.
Is API Zen free?
API Zen is free to download, with in-app purchases available.
Do CodeViewer or API Zen have ads?
Neither CodeViewer nor API Zen shows ads.
Which is updated more often, CodeViewer or API Zen?
CodeViewer ships an update every 8 months, and API Zen every 2 months. Most recently, CodeViewer was updated on October 30, 2026 and API Zen on October 2, 2026.

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