# OpenAPI Viewer vs Reactive Playground

The clearest difference is in-app purchases: Reactive Playground at none against OpenAPI Viewer's 3. Reactive Playground also leads on update cadence (every 3 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OpenAPI Viewer sells 3 one-off in-app purchases. Reactive Playground asks for nothing beyond the download.

OpenAPI Viewer ships an update every 2 weeks, Reactive Playground every 3 days. The most recent releases landed on October 5, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | OpenAPI Viewer | Reactive Playground |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 13 MB | 4 MB |
| Requires iOS | 18.1 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Victor Manuel Puga Ruiz](https://appshunter.io/developer/1648773908) | [Deya Eldeen Mahmoud](https://appshunter.io/developer/1448352213) |

## 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 |


### Reactive Playground

[App page](https://appshunter.io/ios/app/reactive-playground/id6784823079)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenAPI Viewer free?

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

### Is Reactive Playground free?

Reactive Playground is free to download, with no in-app purchases.

### Do OpenAPI Viewer or Reactive Playground have ads?

Neither OpenAPI Viewer nor Reactive Playground shows ads.

### Which is updated more often, OpenAPI Viewer or Reactive Playground?

OpenAPI Viewer ships an update every 2 weeks, and Reactive Playground every 3 days. Most recently, OpenAPI Viewer was updated on October 5, 2026 and Reactive Playground on September 26, 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.*