# Curly vs OpenAPI Viewer

The clearest difference is in-app purchases: Curly at none against OpenAPI Viewer's 3. Curly also leads on update cadence (every 2 days vs every 3 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. Curly asks for nothing beyond the download.

Curly ships an update every 2 days, OpenAPI Viewer every 3 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Curly | OpenAPI Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 5 MB | 15 MB |
| Requires iOS | **17.0** | 18.1 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Artem Sharifullin](https://appshunter.io/developer/1877544384) | [Victor Manuel Puga Ruiz](https://appshunter.io/developer/1648773908) |

## What reviewers say

### Curly

[App page](https://appshunter.io/ios/app/curly-rest-api-client/id6759227355)

A native REST API client for iOS and iPad, designed for developers to test and debug APIs efficiently. It supports various request methods, response inspection with syntax highlighting, and collection organization.

**Highlights:** Send GET, POST, PUT, PATCH, DELETE requests, Edit query params, headers, auth, and request body, JSON syntax highlighting for responses, Organize endpoints into collections, Import Postman and Bruno collections, Environment variables with autocomplete, Pre-request and post-response scripts

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Curly free?

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

### Is OpenAPI Viewer free?

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

### Do Curly or OpenAPI Viewer have ads?

Neither Curly nor OpenAPI Viewer shows ads.

### Which is updated more often, Curly or OpenAPI Viewer?

Curly ships an update every 2 days, and OpenAPI Viewer every 3 weeks. Most recently, Curly was updated on October 31, 2026 and OpenAPI Viewer on October 25, 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.*