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Best Open AI Chat Gpt 5 Apps

234+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated May 2026

Whether you're new to open ai chat gpt 5 or looking for an upgrade, our curated collection of 234+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Open AI Chat Gpt 5 Apps (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1ChatGPTChatGPTFree4.8★ (8.7M)YesYesJul 2026
2Grok AIGrok AIFree4.9★ (1.3M)NoYesJul 2026
3ChatOn AI - Chat Bot AssistantChatOn AI - Chat Bot AssistantFree4.7★ (279K)YesYesJul 2026
4AI Chat Assistant – ChatNowAI Chat Assistant – ChatNowFree4.8★ (135K)YesYesJul 2026
5AI Chat 5.6: GeniusAI Chat 5.6: GeniusFree4.7★ (51K)NoYesJul 2026
6Claude by AnthropicClaude by AnthropicFree4.7★ (203K)NoYesJul 2026
7AI Chatbot - NovaAI Chatbot - NovaFree4.6★ (123K)YesYesJul 2026
8Perplexity - AI Search & ChatPerplexity - AI Search & ChatFree4.8★ (487K)NoYesJul 2026

Top Picks for Open AI Chat Gpt 5

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
Grok AI#2

Grok AI by X Corp.

AI chat & video generation
Strong Contender
📊 Productivity
4.9😊(1.3M ratings)
FreeIn-App Purchases
#3in Productivity
Grok AI screenshot 1
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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.

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
ChatOn AI - Chat Bot Assistant#3

ChatOn AI - Chat Bot Assistant by AIBY

One Chatbot–Multiple Al Tools
Worth Considering
📊 Productivity
4.7😊(279K ratings)
FreeAdsIn-App Purchases
#13in Productivity
ChatOn AI - Chat Bot Assistant screenshot 1
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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.

What We Love

  • 🚀 Excellent AI assistant
  • 👍 User-friendly interface
  • 💡 Versatile features
  • 🚀 Fast and efficient

Room to Improve

  • 🐛 Occasional errors and timeouts
  • 💰 Expensive subscription
  • 🔒 Limited free usage

More Open AI Chat Gpt 5 apps to explore

4
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
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
Claude by Anthropic
Claude by Anthropic
Claude by Anthropic
당신과 함께 생각하는 AI
Free

This AI assistant helps you write, research, code, and solve complex problems. It can analyze documents, code, and images, and even respond to voice commands. Expand your capabilities and tackle new projects with this intelligent thinking partner.

AI writing assistanceCoding and programming helpResearch and data insights
📊 Productivity
(203K)
free with in-app purchases
7
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
8
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
9
Microsoft Copilot
Microsoft Copilot
Microsoft Copilot
Ask AI: Chat & Voice Assistant
Free

This AI assistant helps with a wide range of tasks, from creative projects and everyday questions to work-related needs. It offers natural conversation, visual analysis, and learning tools, making tasks easier and faster.

AI Chat & Voice AssistantAI Image GenerationVisual Image Analysis
📊 Productivity
(402K)
free with in-app purchases
10
CHAI: Social AI Platform- Chat
CHAI: Social AI Platform- Chat
CHAI: Social AI Platform- Chat
Build and Share AI
Free

Engage in dynamic conversations with AI chatbots that mimic real characters, complete with authentic voices. Create your own characters or explore a vast community library. Generate unique images from text prompts for endless creative exploration.

AI chatbot conversationsCharacter creationCommunity character library
🎬 Entertainment
(260K)
free with in-app purchases
11
Google Gemini
Google Gemini
Google Gemini
Your AI assistant from Google
Free

This AI assistant helps you brainstorm, create content, and simplify complex topics. It integrates with your Google apps to provide personalized assistance, plan trips, and study smarter. Upgrade for advanced features like video generation and deeper research capabilities.

Unlimited prompting with Gemini 3 FlashLive interaction via camera/screen sharingContent creation (mockups, posters, diagrams)
📊 Productivity
(2M)
free with in-app purchases
12
Chat AI Plus
Chat AI Plus
Chat AI Plus
Powered by ChatGPT OpenAI Api
Free

This app offers advanced AI-powered chat capabilities, leveraging cutting-edge models for insightful responses. It assists with tasks like document analysis, image generation, and voice-to-text conversion, simplifying daily life and boosting productivity.

Advanced AI chat powered by GPT modelsAI-powered document analysis and summarizationAI image generation from text descriptions
📊 Productivity
(1.5K)
free with in-app purchases
13
PolyBuzz: Chat with Characters
PolyBuzz: Chat with Characters
PolyBuzz: Chat with Characters
Meet & Talk with AI Chatbot
Free

Engage in realistic conversations with AI chatbots that mimic real characters, complete with authentic voices and personalities. Create your own characters or interact with those made by others in a vibrant community. Explore endless story possibilities and enjoy free, immersive dialogues.

AI chatbots with authentic voicesCharacter creation toolsInteract with community-created characters
🎬 Entertainment
(438K)
free with in-app purchases
14
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
15
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
16
ChatGenius - AI Chat, ChatBot
ChatGenius - AI Chat, ChatBot
ChatGenius - AI Chat, ChatBot
Smart Assistant & AI Writer
Free

This AI-powered companion utilizes the GPT-5.1 API to offer advanced chatbot interactions, creative writing assistance, and research tools. It also includes code generation, smart editing, and speech-to-text capabilities, making daily tasks more productive and enjoyable.

Advanced AI chatbot interactionsPoetry and social media post generationResearch and concept explanation
📊 Productivity
(4.3K)
free with in-app purchases
17
Chatbot AI Assistant - Genie
Chatbot AI Assistant - Genie
Chatbot AI Assistant - Genie
AI Chatbot & Image Generator
Free

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.

Advanced AI ChatbotAI Image GeneratorAI Image Editor
📊 Productivity
(198K)
free with in-app purchases
18
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
19
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
20
DeepSeek - AI Assistant
DeepSeek - AI Assistant
DeepSeek - AI Assistant
Intelligent AI Assistant
Free

This AI assistant offers free, intelligent help powered by a cutting-edge model. It provides rapid responses and advanced capabilities to enhance problem-solving and daily efficiency.

Intelligent AI assistantPowered by flagship AI modelFaster response times
📊 Productivity
(11K)
free

FAQ about Open AI Chat Gpt 5

What are the best open ai chat gpt 5 apps for iPhone?
ChatGPT tops our open ai chat gpt 5 apps ranking as of May 2026, with a 4.8-star average from 8.7M App Store ratings, and it's free to download.
Yes — 20 of the top open ai chat gpt 5 apps we rank are free to download, including ChatGPT and Grok AI.
ChatGPT shows ads and offers in-app purchases, according to its App Store listing as of May 2026.
We track 234+ open ai chat gpt 5 apps on the iOS App Store as of May 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.