Best Openai Api Apps

237+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated June 2026

If you already know Chat API, this is the deeper bench. 237+ openai api apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.

Top Picks for Openai Api

Chat API – AI Wrapper#1

Chat API – AI Wrapper by Andres Nunez Soto

Your AI, Your Keys, Your Way
Editor's Choice
🛠️ Developer Tools
5.0(4 ratings)
FreeAdsIn-App Purchases
Chat API – AI Wrapper screenshot 1
Chat API – AI Wrapper screenshot 2
Chat API – AI Wrapper screenshot 3
Chat API – AI Wrapper screenshot 4
Chat API – AI Wrapper screenshot 5

ChatAPI - Bring Your Own Keys is a chat application that utilizes OpenAI technology to offer users a powerful and customizable chatbot experience. Integrate this advanced chat functionality into your app today for enhanced user engagement and support.

Claude by Anthropic#2

Claude by Anthropic by Anthropic PBC

AI assistant for life and work
Strong Contender
📊 Productivity
4.7😊(177K ratings)
FreeAdsIn-App Purchases
#2in Productivity
Claude by Anthropic screenshot 1
Claude by Anthropic screenshot 2
Claude by Anthropic screenshot 3
Claude by Anthropic screenshot 4
Claude by Anthropic screenshot 5
Claude by Anthropic screenshot 6

Get instant help on various tasks with Claude, an AI assistant that offers intelligence at your fingertips. Collaborate, brainstorm, or get assistance with daily tasks while on the go. Trust Claude to be your reliable partner for all your needs. To learn more, visit the website.

What We Love

  • 🚀 Powerful and versatile AI assistant
  • 👍 Intuitive and easy to use interface
  • 💡 Innovative features like 'Projects'
  • 🤖 Intelligent and thoughtful responses

Room to Improve

  • 🔒 Concerns about privacy and data usage
  • 🚫 Limitations on free usage and throttling
  • 🐛 Occasional bugs and crashes
Grok - AI Assistant#3

Grok - AI Assistant by TWITTER INTERNATIONAL UNLIMITED COMPANY

The real-time AI assistant
Worth Considering
📊 Productivity
4.8😊(122K ratings)
FreeIn-App Purchases
#3in Productivity
Grok - AI Assistant screenshot 1
Grok - AI Assistant screenshot 2
Grok - AI Assistant screenshot 3
Grok - AI Assistant screenshot 4
Grok - AI Assistant screenshot 5
Grok - AI Assistant screenshot 6

What We Love

  • 🚀 Fast and efficient
  • 🔒 Unbiased and ethical
  • 👍 Clean and intuitive UI
  • 🤖 Powerful AI capabilities

Room to Improve

  • 🐛 Occasional errors in responses
  • 🔍 Needs more robust search/history features
  • 🔌 Requires X account for full functionality

More Openai Api apps to explore

4
Perplexity - AI Search & Chat
Perplexity - AI Search & Chat
Perplexity - AI Search & Chat
Ask. Research. Trusted Answers
Free

Discover a smarter way to access credible and up-to-date answers with AI-powered search and discovery. Features include guided AI search, voice or text input, threaded conversations, and a community-driven learning experience. Start your journey to better knowledge and understanding by downloading the app now.

📊 Productivity
(476K)
5
Cumbersome: AI LLM API Client
Cumbersome: AI LLM API Client
Cumbersome: AI LLM API Client
API to ChatGPT, OpenAI, Ollama
Free

This application provides a manual transmission interface for power users to interact with AI models from OpenAI and Anthropic, offering control, transparency, and complete privacy. With features like Face/Off Mode, document-style workspace, and conversation editing, users can generate high-quality responses, switch between AI providers, and pay providers directly at cost, making it ideal for developers, researchers, and power users.

📊 Productivity
(18)
6
Poe – Fast AI Chat
Poe – Fast AI Chat
Poe – Fast AI Chat
Ask questions and get answers
Free
📊 Productivity
(54K)
7
OpenCat - AI Chat, Agent, MCP
OpenCat - AI Chat, Agent, MCP
OpenCat - AI Chat, Agent, MCP
Native AI Utilities
Free

Connect with a native AI chat client for a smoother and faster chat experience. Have questions? Contact us at friends@baye.dev. Find our Terms of Use here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

📊 Productivity
(833)
8
Pal Chat - AI Chat Client
Pal Chat - AI Chat Client
Pal Chat - AI Chat Client
Powerful AI chat playground
Free

This AI Chat Client for iPhone offers support for various AI models and features like saving prompts, text-to-speech, generating images, and more. It prioritizes privacy with no ads, in-app purchases, or data collection, while providing a seamless chat experience with powerful AI capabilities. Get your API Key and experience the efficiency and versatility of Pal Chat!

📊 Productivity
(396)
9
Chat Unlimited & Ask Brutus AI
Chat Unlimited & Ask Brutus AI
Chat Unlimited & Ask Brutus AI
Powered by ChatGPT & GPT API
Free

Connect with friends and family through instant messaging, video calls, and group chats using this versatile communication app. Stay connected anytime, anywhere. Download now to experience seamless communication!

📚 Education
(542)
10
Prodigy — AI Chat Assistant
Prodigy — AI Chat Assistant
Prodigy — AI Chat Assistant
Chat with your api key
$3.99

A customizable AI chat assistant that lets you chat, get answers, and generate images, with the option to use your own API key for an ad-free experience. Enjoy complete control over your chat interactions and personalize your experience today!

📊 Productivity
(26)
11
ATOM: GPT Client & AI Chat Bot
ATOM: GPT Client & AI Chat Bot
ATOM: GPT Client & AI Chat Bot
Сhatbot powered by API
Free

This AI-powered chatbot application serves as a personal portal to the world of artificial intelligence, assisting with work, learning, and socializing by providing adaptable and natural conversation. With an intuitive interface and multifunctionality, it offers a smart assistant that's available anytime, anywhere, to help users with various tasks and conversations.

🔧 Utilities
(2)
12
Postmon - Rest API Client
Postmon - Rest API Client
Postmon - Rest API Client
HTTP API Client
Free
🛠️ Developer Tools
(0)
13
AI Writer Generative AI & Chat
AI Writer Generative AI & Chat
AI Writer Generative AI & Chat
Powered By ChatGPT & GPT-4 API
Free

AI Writer is an advanced writing tool powered by artificial intelligence. It can generate engaging and high-quality content based on user input, making writing easier and more efficient. Try it now to experience the future of content creation!

💼 Business
(154)
14
Chatbot AI: AI Chat Assistant
Chatbot AI: AI Chat Assistant
Chatbot AI: AI Chat Assistant
AI Chat & Image Generator
Free

Get instant assistance with writing, problem-solving, and creativity with our AI chatbot, powered by advanced technology. Try it out today to boost your productivity and access a range of features, including language translation, image generation, and more.

📊 Productivity
(6K)
15
Replika - AI Friend
Replika - AI Friend
Replika - AI Friend
Chat, talk with Robot Chatbot
Free

Connect with an AI friend who is always here to listen and talk. Chat with Replika for a supportive conversation anytime you need.

💪 Health & Fitness
(14K)
16
Teste - API, Scripts, Terminal
Teste - API, Scripts, Terminal
Teste - API, Scripts, Terminal
Developer Workspace
Free

Experience seamless API testing with our innovative tool that lets you create, edit, and run scripts effortlessly. Test your APIs with precision and ease - try it now!

🛠️ Developer Tools
(496)
17
Chatto - AI Chat & AI Chatbot
Chatto - AI Chat & AI Chatbot
Chatto - AI Chat & AI Chatbot
Artificial Intelligence & GPT
Free

Chatto is an AI-powered messaging application that offers users the ability to have natural conversations with an intelligent chatbot. Engage in meaningful dialogue and explore various topics with this innovative app today.

📊 Productivity
(38)
18
AI Chat: Gem Chatbot Assistant
AI Chat: Gem Chatbot Assistant
AI Chat: Gem Chatbot Assistant
Powered by ChatGPT API & GPT-4
Free

AI Chat: Gem Chatbot Assistant is a powerful tool that leverages the ChatGPT API to provide advanced conversational abilities. Enhance your customer service or personal interactions with this intelligent chatbot solution.

📊 Productivity
(100)
19
Chatbot AI Assistant - Genie
Chatbot AI Assistant - Genie
Chatbot AI Assistant - Genie
AI Chatbot & Image Generator
Free

Experience personalized and intelligent conversations with Chatbot 4o AI Chat - Genie. ChatGPT-powered, it offers advanced AI capabilities for engaging and informative interactions. Start chatting now to unlock a world of tailored responses and assistance.

📊 Productivity
(28K)
20
AI Chat − AI Chatbot Assistant
AI Chat − AI Chatbot Assistant
AI Chat − AI Chatbot Assistant
AI Writing, AI Image Generator
Free

AI Chat is a powerful AI chatbot assistant powered by GPT-4, designed to enhance communication by providing intelligent responses and assisting with a variety of tasks. Experience next-level interactions with this cutting-edge application today!

📊 Productivity
(159)