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Best Chat Gpt 4O Apps

233+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated July 2026

If you already know ChatGPT, this is the deeper bench. 233+ chat gpt 4o apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of July 2026.

Compare top Chat Gpt 4O Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1ChatGPTChatGPTFree4.8★ (8.7M)YesYesJul 2026
2AI Chat 4.0: Open Chatbot 4oAI Chat 4.0: Open Chatbot 4oFree4.5★ (1.8K)NoYesJul 2026
3Chatbot AI Assistant - GenieChatbot AI Assistant - GenieFree4.7★ (198K)YesYesJul 2026
4Chat AI - Ask AnythingChat AI - Ask AnythingFree4.8★ (126K)YesYesJul 2026
5AI Chat 5.6: GeniusAI Chat 5.6: GeniusFree4.7★ (51K)NoYesJul 2026
6Chatbot AI: AI Chat AssistantChatbot AI: AI Chat AssistantFree4.6★ (6K)NoYesJul 2026
7GPT AI Assistant Chat－ChatbotGPT AI Assistant Chat－ChatbotFree4.8★ (310)YesYesJul 2026
8Poe – Fast AI ChatPoe – Fast AI ChatFree4.7★ (54K)NoYesJul 2026

Top Picks for Chat Gpt 4O

ChatGPT#1

ChatGPT by OpenAI OpCo, LLC

The official app by OpenAI
Editor's Choice
📊 Productivity
4.8😊(8.7M ratings)
FreeAdsIn-App Purchases
#1in Productivity
ChatGPT screenshot 1
ChatGPT screenshot 2
ChatGPT screenshot 3
ChatGPT screenshot 4
ChatGPT screenshot 5
ChatGPT screenshot 6

This app provides access to advanced AI capabilities, including text generation, image creation from descriptions, and voice conversations. It offers personalized advice, creative inspiration, and instant answers for various tasks, syncing history across devices.

What We Love

  • 🚀 Powerful and versatile AI assistant
  • 👍 Intuitive and user-friendly interface
  • 🤖 Impressive conversational abilities
  • 💡 Convenient mobile access to ChatGPT

Room to Improve

  • 🐛 Occasional inaccuracies or inconsistencies in responses
  • 🔖 Limited to pre-2021 data, lacking real-time updates
  • 🔒 Concerns about privacy and data usage
AI Chat 4.0: Open Chatbot 4o#2

AI Chat 4.0: Open Chatbot 4o by Liquid Apps Kft.

Image, Photo & Text Generator
Strong Contender
📊 Productivity
4.5😞(1.8K ratings)
FreeIn-App Purchases
AI Chat 4.0: Open Chatbot 4o screenshot 1
AI Chat 4.0: Open Chatbot 4o screenshot 2
AI Chat 4.0: Open Chatbot 4o screenshot 3
AI Chat 4.0: Open Chatbot 4o screenshot 4
AI Chat 4.0: Open Chatbot 4o screenshot 5

This app offers a versatile AI assistant powered by advanced models like GPT-5.4 and Gemini 3.1 Pro. It excels at generating text, images, translations, and personalized plans for travel, fitness, and meals. Seamlessly switch between models for optimal results in everyday tasks, creativity, and learning.

What We Love

  • 🚀 Awesome tool
  • 💡 The best AI app I ever used
  • 👍 Very useful in many ways
  • 👍 This is the best!

Room to Improve

  • 🐛 Do not purchase this app!
  • 🐛 Not worth it!
  • 🐛 Lila
Chatbot AI Assistant - Genie#3

Chatbot AI Assistant - Genie by APPNATION YAZILIM HIZMETLERI TICARET ANONIM SIRKETI

AI Chatbot & Image Generator
Worth Considering
📊 Productivity
4.7😐(198K ratings)
FreeAdsIn-App Purchases
#45in Productivity
Chatbot AI Assistant - Genie screenshot 1
Chatbot AI Assistant - Genie screenshot 2
Chatbot AI Assistant - Genie screenshot 3
Chatbot AI Assistant - Genie screenshot 4
Chatbot AI Assistant - Genie screenshot 5
Chatbot AI Assistant - Genie screenshot 6

This AI-powered assistant helps with work, study, and creative projects. It offers advanced chat, image generation and editing, document analysis, and web search capabilities. Get instant insights and create visuals from text descriptions.

What We Love

  • 🚀 Powerful AI assistant
  • 👍 User-friendly interface
  • 💡 Versatile capabilities
  • 🤖 Impressive language understanding

Room to Improve

  • 🐛 Unreliable performance with frequent crashes
  • ⏱️ Slow response times during high traffic
  • 💰 Expensive subscription model

More Chat Gpt 4O apps to explore

4
Chat AI - Ask Anything
Chat AI - Ask Anything
Chat AI - Ask Anything
AI Chatbot & Essay Writer Bot
Free

Engage in intelligent conversations with an advanced AI chatbot. This app offers personalized responses on a wide range of topics and can assist with writing tasks like essays and emails. Its AI continuously learns for more natural interactions.

Intelligent conversationsPersonalized responsesEssay and content writing
📊 Productivity
(126K)
free with in-app purchases
5
AI Chat 5.6: Genius
AI Chat 5.6: Genius
AI Chat 5.6: Genius
Chatbot Agent 4.0 Built on GPT
Free

This AI-powered tool can generate and edit images, write and rewrite text for various purposes, and explain content from photos or documents. It also provides up-to-date web search results and can analyze files like PDFs and spreadsheets.

Image generation and editingText writing and rewritingPhoto-based explanations
🔧 Utilities
(51K)
free with in-app purchases
6
Chatbot AI: AI Chat Assistant
Chatbot AI: AI Chat Assistant
Chatbot AI: AI Chat Assistant
AI Chat & Image Generator
Free

Access multiple advanced AI models, including GPT-5, Claude, Grok, Gemini, and DeepSeek, in a single application. Generate text, create images, get help with tasks, and translate languages with intelligent assistance.

Access to GPT-5, Claude, Grok, Gemini, DeepSeekAI-powered text generationImage generation from descriptions
📊 Productivity
(6K)
free with in-app purchases
7
GPT AI Assistant Chat－Chatbot
GPT AI Assistant Chat－Chatbot
GPT AI Assistant Chat－Chatbot
AI powered by ChatGPT & GPT－5
Free

This AI-powered assistant helps you write, create, learn, and get instant answers. It leverages advanced AI models to generate text, images, and summaries from various inputs, making daily tasks more efficient.

AI-powered writing assistanceInstant answers and explanationsContent summarization and analysis
📊 Productivity
(310)
free with in-app purchases
8
Poe – Fast AI Chat
Poe – Fast AI Chat
Poe – Fast AI Chat
Ask questions and get answers
Free

Access multiple advanced AI models and generative tools in one application. Engage in conversational AI, create multimedia content, and build custom chatbots for various tasks. Offers both free and subscription-based AI models.

Access to leading AI modelsMultimedia generation (images/videos)Create and customize chatbots
📊 Productivity
(54K)
free with in-app purchases
9
Grok AI
Grok AI
Grok AI
AI chat & video generation
Free

This AI assistant provides fast, truthful answers and can perform deep web research. It generates striking images and videos from text or voice prompts, and can analyze uploaded content. Engage in conversations with personalized AI companions and access real-time information from X.

AI-powered Q&A and web researchAI image and video generationVoice mode with live camera
📊 Productivity
(1.3M)
free with in-app purchases
10
Perplexity - AI Search & Chat
Perplexity - AI Search & Chat
Perplexity - AI Search & Chat
Ask. Research. Trusted Answers
Free

Get accurate, source-backed answers to any question with this AI-powered search and chat tool. It leverages top AI models for deep research, drafting emails, and more, syncing across devices. Discover new information and organize your findings in a personal library.

AI-powered search with cited sourcesDeep research and guided explorationConversational follow-up questions
📊 Productivity
(487K)
free with in-app purchases
11
ChatOn AI - Chat Bot Assistant
ChatOn AI - Chat Bot Assistant
ChatOn AI - Chat Bot Assistant
One Chatbot–Multiple Al Tools
Free

This AI assistant leverages advanced language models to help with writing, image transformation, document analysis, and web research. It offers over 100 prompts and integrates with your keyboard for seamless use across apps. Transform photos, summarize documents, and generate social media content with ease.

AI Chatbot & Virtual AssistantAI Writing AssistantPic Transformer (AI Photo Editing)
📊 Productivity
(279K)
free with in-app purchases
12
AI Chat Assistant – ChatNow
AI Chat Assistant – ChatNow
AI Chat Assistant – ChatNow
Built on Gemini, GPT, Grok 4
Free

This AI assistant helps busy individuals boost productivity by handling tasks like writing emails, generating code, creating images, and summarizing documents. It supports voice input, file uploads, and image analysis, leveraging multiple advanced AI models for diverse needs.

Voice mode for real-time conversationsImage and video generationWriting and grammar assistance
📊 Productivity
(135K)
free with in-app purchases
13
Google Chat
Google Chat
Google Chat
Efficient Team Communication
Free

Connect, collaborate, and accomplish tasks with AI-powered messaging. Streamline teamwork with integrations and smart features. Securely communicate with your team, whether in real-time or asynchronously.

AI-powered conversation summariesAutomatic message translationAI-powered search
💼 Business
(304K)
free with in-app purchases
14
AI Chatbot - Nova
AI Chatbot - Nova
AI Chatbot - Nova
Ask smart chatbot & Al writer
Free

This AI chatbot and writer leverages advanced GPT and Gemini models to provide human-like conversations, creative writing assistance, and meticulous proofreading. It offers unlimited interactions, multi-language support, and cross-device compatibility for a versatile user experience.

Advanced AI models (GPT-5.2, GPT-4o, Gemini, Claude)Human-like conversational AIAI writing assistant for various content
📊 Productivity
(123K)
free with in-app purchases
15
Chat Smith: AI Chatbot & Agent
Chat Smith: AI Chatbot & Agent
Chat Smith: AI Chatbot & Agent
Study, Writing, Research Agent
Free

This AI assistant offers advanced capabilities for writing, research, and image generation. It leverages multiple powerful AI models to provide deep insights, create content, and simplify tasks. Ideal for students, professionals, and creatives seeking enhanced productivity.

AI Image GeneratorAI Writing AssistantDeep Research with Sources
📊 Productivity
(167K)
free with in-app purchases
16
AI Chat - TryChat - Chat Bot
AI Chat - TryChat - Chat Bot
AI Chat - TryChat - Chat Bot
Ask Anything
Free

Engage in conversations with advanced AI models, including GPT-4, Gemini, and Claude. This free, unlimited chat service requires no login and offers access to multiple powerful AI technologies.

Multiple AI models availableUnlimited free usageNo login required
📚 Education
(1.6K)
free with in-app purchases
17
AI Chatbot Assistant - Chatbot
AI Chatbot Assistant - Chatbot
AI Chatbot Assistant - Chatbot
Top Al models・Open Chat Ask AI
Free

This AI chatbot leverages advanced models like ChatGPT and GPT-4o to provide intelligent assistance for a wide range of tasks. It acts as a helpful companion for writing, translation, information retrieval, brainstorming, and casual conversation, offering an intuitive user experience.

Powered by ChatGPT and GPT-4oWrite articles, emails, and moreTranslate and practice languages
📊 Productivity
(237)
free with in-app purchases
18
AI ChatBot Assistant: AskEasy
AI ChatBot Assistant: AskEasy
AI ChatBot Assistant: AskEasy
Top Chat Built on All Models
Free

This AI assistant helps with daily tasks, answering queries, writing content, and generating images. It can also summarize documents, translate languages, and create captions for photos, making life more efficient and fun.

AI Image GeneratorAI Writing AssistantUpload and Ask (PDFs)
📊 Productivity
(30K)
subscription
19
Chat Unlimited & Ask Brutus AI
Chat Unlimited & Ask Brutus AI
Chat Unlimited & Ask Brutus AI
Powered by ChatGPT & GPT API
Free

Engage in intelligent conversations with an AI assistant powered by advanced language models and internet search. This app offers a free mode, stores past conversations, and assists with various tasks, learning, and creative endeavors. Enjoy a private and secure chat experience with a user-friendly interface.

AI Chat Bot AssistantOpenAI GPT-4 API integrationInternet Search capabilities
📚 Education
(542)
free with in-app purchases
20
Chat AI: Ask Agent Anything
Chat AI: Ask Agent Anything
Chat AI: Ask Agent Anything
Chatbot & Search Assistant
Free

Engage in personalized conversations with an AI that understands and adapts to you. Access specialized AI assistants for various tasks, generate unique images from text, and get instant information about the world through photos. This app also offers writing assistance, language learning, and homework help.

Personalized AI conversationsSpecialized AI assistantsAI image generation
📊 Productivity
(325K)
free with in-app purchases

FAQ about Chat Gpt 4O

What are the best chat gpt 4o apps for iPhone?
ChatGPT tops our chat gpt 4o apps ranking as of July 2026, with a 4.8-star average from 8.7M App Store ratings, and it's free to download.
Yes — 20 of the top chat gpt 4o apps we rank are free to download, including ChatGPT and AI Chat 4.0: Open Chatbot 4o.
ChatGPT shows ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 233+ chat gpt 4o apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
This app provides access to advanced AI capabilities, allowing users to generate text, create images from descriptions, and engage in real-time voice conversations. It can offer creative inspiration, tailored advice, personalized learning assistance, and instant answers for a wide range of queries.
Key features include generating original images from text descriptions, engaging in advanced voice conversations, uploading photos to transcribe or get information, and receiving creative inspiration or tailored advice. It also supports personalized learning and professional brainstorming.