Best apps like Cosmo: mobile postman

10+ similar apps compared and reviewed

3.6 avg rating

10 free apps

Updated October 2026

Cosmo: mobile postman

Fetch Cosmo, LLC

🛠️ Developer Tools

Cosmo is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to Cosmo

#1

API Dash - API Client, Testing by Ashita Prasad

API Client to easily test APIs

Editor's Choice

🛠️ Developer Tools

0.0(0 ratings)

Free

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Easily create, customize, and test various HTTP API requests. Organize your requests into collections and preview multimedia responses like images and PDFs. Generate code snippets for integration into your projects.

#2

PostX - Rest API Client by Anupkumar Naginbhai Patel

HTTP API Client

Strong Contender

🛠️ Developer Tools

3.0(10 ratings)

FreeIn-App Purchases

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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.

#3

ApiClient: REST API Tester by Ajaykumar Valand

HTTP Client for GraphQL & cURL

Worth Considering

🛠️ Developer Tools

1.0(1 ratings)

FreeAdsIn-App Purchases

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Test and manage REST APIs directly from your phone. Import, edit, and export Postman collections, send Firebase notifications, and format JSON requests on the go. Save API requests and responses for easy access and sharing.

More apps like Cosmo

HTTPBot: API & HTTP Client

HTTPBot: API & HTTP Client

HTTPBot: API & HTTP Client

API, MCP & WebSocket Debugger

This app allows users to send HTTP/HTTPS requests and connect to WebSockets, making it easy to debug APIs on the go. It supports various response formats, collaboration features, and authentication methods, streamlining API development and testing.

Send HTTP/HTTPS and WebSocket requestsInspect JSON, HTML, and XML responsesImport/export Postman collections

🛠️ Developer Tools

free with in-app purchases

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RestForge - API Client

RestForge - API Client

RestForge - API Client

GraphQL & REST API Client

This app allows developers to build, test, debug, and automate APIs directly from their mobile devices. It supports various HTTP methods, body types, and offers cloud sync, scripting, and SOAP support. Premium features include code export and an analytics dashboard.

Send and test all HTTP methodsSupport for multiple body typesImport from popular API tools

🛠️ Developer Tools

free with in-app purchases

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Node.js offline & Git Client

Develop and run Node.js web applications directly on your iOS device, even offline. This app includes a full Node.js environment with NPM, a script editor, and debugging tools. It also functions as a standalone web application and offers extensive file management capabilities.

Offline Node.js environmentIntegrated Git clientMulti-tabbed script editor

🛠️ Developer Tools

free with in-app purchases

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Reins: for Ollama & LM Studio

Reins: for Ollama & LM Studio

Reins: for Ollama & LM Studio

Private, Local AI Chat

This app provides a mobile interface for interacting with self-hosted large language models. It allows users to connect to their Ollama servers remotely, manage multiple chats, customize prompts, and adjust advanced model parameters for research and experimentation.

Remote Ollama server accessPer-chat system promptsPrompt editing and regeneration

🛠️ Developer Tools

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Proxyman - Capture HTTPS

Proxyman - Capture HTTPS

Proxyman - Capture HTTPS

Capture HTTPS from your iPhone

This app acts as a web debugging proxy, allowing you to capture and inspect HTTP/HTTPS traffic directly from your iPhone or iPad. It decrypts requests and responses, offers advanced debugging tools, and ensures your sensitive data remains on your device.

Capture & Inspect HTTP/HTTPS from iOS devicesDecrypt and view requests/responsesJSON syntax highlighting

🛠️ Developer Tools

free with in-app purchases

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Git client - Working Copy

for GitHub and self-hosted

Access and manage Git repositories directly on your iOS device. Clone, edit, commit, and push code, even offline. Offers advanced features for code review and automation.

Clone, edit, commit, and push repositoriesOffline commit capabilitySyntax highlighting for 50+ languages

🛠️ Developer Tools

free with in-app purchases

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*Local* Unix terminal (& ssh)

Run a full Unix-like terminal environment on your iOS device. Execute a wide range of commands, edit files, and even program using included interpreters and compilers. Supports multitasking and integration with Shortcuts.

Local Unix terminal emulatorSSH clientFile transfer (scp, curl)

🛠️ Developer Tools

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