# Cosmo vs PostX

The clearest difference is in-app purchases: Cosmo at none against PostX's 3. Cosmo also leads on iOS requirement (15.1 vs 17.6). PostX's advantage is chart position (#146 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. PostX sells 3 in-app purchases, starting at $4.99 per 7 days. Cosmo asks for nothing beyond the download.

## The numbers

| Metric | Cosmo | PostX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (10 ratings)](https://appshunter.io/ios/app/postx-rest-api-client/id6756872354/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Monetization | — | Freemium |
| Best chart rank | — | **#146** |
| Size | 45 MB | 4 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fetch Cosmo, LLC](https://appshunter.io/developer/1793636186) | [Anupkumar Naginbhai Patel](https://appshunter.io/developer/1863355963) |

## What reviewers say

### Cosmo

[App page](https://appshunter.io/ios/app/cosmo-mobile-postman/id6741242035)

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

**In-app purchases:** none


### PostX

[App page](https://appshunter.io/ios/app/postx-rest-api-client/id6756872354)

**Currently charting:** #146 Top Grossing · Developer Tools (US App Store)

This app allows developers to build and test REST, HTTP, and SOAP APIs directly on their iPhone or iPad. It supports various request methods, authentication types, and body formats, with features for organizing requests and inspecting responses.

**Highlights:** HTTP/HTTPS methods (GET, POST, PUT, DELETE, PATCH), Custom query parameters, Basic, Bearer/JWT, OAuth authentication, Customizable headers, Multiple body formats (raw, binary, GraphQL, form-data), Pre-request and post-response scripting, Response viewer with status codes and prettified JSON, Request history and workspaces

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Postmon Pro Weekly | $4.99 | per 7 days |
| Postmon Pro Monthly | $9.99 | per month |
| Postmon Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is Cosmo free?

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

### Is PostX free?

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

### Do Cosmo or PostX have ads?

Neither Cosmo nor PostX shows ads.

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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.*