# OpenAPI Viewer vs Code Runner

The clearest difference is ads: OpenAPI Viewer at none against Code Runner's shown. OpenAPI Viewer also leads on update cadence (every 2 weeks vs every 4 weeks). Code Runner's advantage is iOS requirement (16.4 vs 18.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. OpenAPI Viewer sells 3 one-off in-app purchases and Code Runner sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

OpenAPI Viewer ships an update every 2 weeks, Code Runner every 4 weeks. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | OpenAPI Viewer | Code Runner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/code-runner-compiler/id6783243468/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 13 MB | 54 MB |
| Requires iOS | 18.1 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Victor Manuel Puga Ruiz](https://appshunter.io/developer/1648773908) | [Omer Faruk BAGCI](https://appshunter.io/developer/1850264269) |

## What reviewers say

### OpenAPI Viewer

[App page](https://appshunter.io/ios/app/openapi-viewer/id6761346493)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $1.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Large Tip | $9.99 | one-time |


### Code Runner

[App page](https://appshunter.io/ios/app/code-runner-compiler/id6783243468)

This app functions as a mobile compiler and code editor, allowing users to write and execute real code in multiple programming languages. It offers a secure cloud sandbox for instant output and a touch-optimized editor with features like syntax highlighting and autocomplete. Users can save and reuse code snippets and work offline.

**Highlights:** Run code in 8 languages, Secure cloud sandbox execution, Real-time output and error display, Touch-optimized code editor, Syntax highlighting and autocomplete, Save and reuse code snippets, Offline code editing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CodeRunner Pro | $3.99 | per month |
| CodeRunner Pro (Annual) | $24.99 | per year |


## Frequently asked questions

### Is OpenAPI Viewer free?

OpenAPI Viewer is free to download, with in-app purchases available.

### Is Code Runner free?

Code Runner is free to download, with in-app purchases available.

### Do OpenAPI Viewer or Code Runner have ads?

Code Runner shows ads; OpenAPI Viewer does not.

### Which is updated more often, OpenAPI Viewer or Code Runner?

OpenAPI Viewer ships an update every 2 weeks, and Code Runner every 4 weeks. Most recently, OpenAPI Viewer was updated on September 18, 2026 and Code Runner on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*