# API Zen vs Curly

The clearest difference is in-app purchases: Curly at none against API Zen's 3. Curly also leads on update cadence (every 2 days vs every 2 months). API Zen's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. API Zen sells 3 one-off in-app purchases. Curly asks for nothing beyond the download.

API Zen ships an update every 2 months, Curly every 2 days. Both last shipped on September 15, 2026.

## The numbers

| Metric | API Zen | Curly |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 7 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jaseem Valiya Valappil](https://appshunter.io/developer/1714873997) | [Artem Sharifullin](https://appshunter.io/developer/1877544384) |

## What reviewers say

### API Zen

[App page](https://appshunter.io/ios/app/api-zen/id6471152115)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thanks | $3.99 | one-time |
| Thank you | $5.99 | one-time |
| Thank you very much | $7.99 | one-time |


### 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


## Frequently asked questions

### Is API Zen free?

API Zen is free to download, with in-app purchases available.

### Is Curly free?

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

### Do API Zen or Curly have ads?

Neither API Zen nor Curly shows ads.

### Which is updated more often, API Zen or Curly?

API Zen ships an update every 2 months, and Curly every 2 days. Most recently, API Zen was updated on September 15, 2026 and Curly on September 15, 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.*