Best Codex Apps

229+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated July 2026

With an average user rating of 4.6★, the codex category is one of the App Store's strongest. Browse all 229+ apps we track, sorted so the most loved ones surface first.

Compare top Codex Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1ChatGPTChatGPTFree4.8★ (8.8M)YesYesJul 2026
2Codex Relay - Remote Codex AppCodex Relay - Remote Codex AppFree4.3★ (36)NoNoJul 2026
3Claude by AnthropicClaude by AnthropicFree4.7★ (207K)NoYesJul 2026
4Google GeminiGoogle GeminiFree4.7★ (2M)NoYesJul 2026
5GitHubGitHubFree4.8★ (35K)NoYesJul 2026
6Grok AIGrok AIFree4.9★ (1.3M)NoYesJul 2026
7XXFree4.6★ (11M)YesYesJul 2026
8DeepSeek - AI AssistantDeepSeek - AI AssistantFree4.0★ (11K)NoNoJul 2026

Top Picks for Codex

ChatGPT#1

ChatGPT by OpenAI OpCo, LLC

Your everyday AI assistant
Editor's Choice
📊 Productivity
4.8😊(8.8M ratings)
FreeAdsIn-App Purchases
#1in Productivity
ChatGPT screenshot 1
ChatGPT screenshot 2
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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
Codex Relay - Remote Codex App#2

Codex Relay - Remote Codex App by Kang Sungyu

Codex on your phone
Strong Contender
🛠️ Developer Tools
4.3(36 ratings)
Free
#14in Developer Tools
Codex Relay - Remote Codex App screenshot 1
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Codex Relay - Remote Codex App screenshot 4
Codex Relay - Remote Codex App screenshot 5
Codex Relay - Remote Codex App screenshot 6

Manage your Codex workflow remotely from your phone. Track active threads, send prompts, review output, and respond to requests. Designed for developers to stay connected to their work without being at their desk.

Claude by Anthropic#3

Claude by Anthropic by Anthropic PBC

AI assistant for life and work
Worth Considering
📊 Productivity
4.7😊(207K ratings)
FreeIn-App Purchases
#2in Productivity
Claude by Anthropic screenshot 1
Claude by Anthropic screenshot 2
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Claude by Anthropic screenshot 4
Claude by Anthropic screenshot 5
Claude by Anthropic screenshot 6

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.

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

More Codex apps to explore

4
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
5
GitHub
GitHub
GitHub
Projects, ideas, & code to go
Free

Manage your code projects, review changes, and collaborate with your team on the go. This app allows you to stay updated with notifications, respond to issues, and browse files and code from anywhere.

Browse notificationsRead, react, and reply to Issues and Pull RequestsReview and merge Pull Requests
🛠️ Developer Tools
(35K)
free with in-app purchases
6
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
7
X
X
X
Breaking News & Social Media
Free

Connect with a global community in real-time for breaking news, live events, and conversations. Share your thoughts, discover trending topics, and engage with diverse perspectives. Features include an AI assistant, live audio/video, and private messaging.

Real-time breaking news updatesPost thoughts, photos, and videosAI assistant for news summaries
📡 News
(11M)
free with in-app purchases
8
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
9
Manus - AI Agent & Automation
Manus - AI Agent & Automation
Manus - AI Agent & Automation
Web Dev, Slides, research
Free

This AI agent bridges thought and action by autonomously planning, researching, and delivering finished products on a virtual computer. It handles complex tasks like data analysis, slide deck generation, and media creation, working asynchronously in the cloud and notifying you upon completion.

Autonomous task planning and executionAdvanced data analysis and reportingBoardroom-quality slide deck generation
📊 Productivity
(35K)
free with in-app purchases
10
Kimi - Kimi K3 is Live
Kimi - Kimi K3 is Live
Kimi - Kimi K3 is Live
K2.5·Visual·Agent·Code·Office
Free

This AI-powered agent assists with coding, content creation, and office tasks. It can generate presentations, build websites from designs, and perform complex research with autonomous sub-agents for enhanced efficiency. Handle large documents and detailed conversations with its extensive context window.

Autonomous sub-agent creation for parallel efficiencyCode, create, analyze, and build presentationsAutomate workflows with scheduled tasks and long-term memory
📊 Productivity
(4.7K)
freemium
11
Swift Playground
Swift Playground
Swift Playground
Learn real coding the fun way
Free

Learn to code and build real apps through interactive puzzles and challenges. Explore Swift and SwiftUI, Apple's powerful programming languages, with guided lessons and hands-on creation. Suitable for beginners of all ages, it offers a unique learning experience on iPad.

Interactive coding puzzlesBuild real apps with SwiftUILearn Swift programming
📚 Education
(1.8K)
free
12
Gemini Notebook
Gemini Notebook
Gemini Notebook
Understand anything
Free

This AI-powered tool transforms complex information from various sources into clear, understandable insights. It allows users to upload documents, websites, and videos, then ask questions and receive summarized answers with inline citations. Users can also generate podcast-style audio discussions for a different learning experience.

Upload PDFs, websites, and videosAI-powered summarizationAsk questions about sources
📊 Productivity
(50K)
free with in-app purchases
13
Happy: Codex & Claude Code App
Happy: Codex & Claude Code App
Happy: Codex & Claude Code App
Codex & Claude Code on the go
Free

This app provides a secure mobile interface for AI coding assistants, allowing you to continue sessions and monitor progress from anywhere. It features end-to-end encryption and a zero-knowledge architecture for ultimate privacy. Seamlessly switch between desktop and mobile for uninterrupted AI coding.

Seamless desktop and mobile session continuationPush notifications for AI tasksOffline access to conversation history
🛠️ Developer Tools
(967)
free with in-app purchases
14
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
15
Mobile IDE for Codex AI GPT
Mobile IDE for Codex AI GPT
Mobile IDE for Codex AI GPT
Remote Coding From Anywhere
Free

This app provides a mobile interface for a desktop AI coding environment, allowing developers to edit code, run commands, manage Git, and interact with AI assistants from their iPhone. It enables productive use of idle moments by offering real-time access to projects and a built-in terminal.

Real-time desktop bridgeBuilt-in terminalFull Git support
🛠️ Developer Tools
(0)
freemium
16
Canva(캔바): 디자인, 사진편집, 동영상 편집
Canva(캔바): 디자인, 사진편집, 동영상 편집
Canva(캔바): 디자인, 사진편집, 동영상 편집
그래픽 디자인 + 로고 메이커
Free

Create stunning graphics, photos, and videos with an all-in-one platform. Generate videos from text prompts using AI, edit photos with background removal, and design presentations, resumes, and social media content. Collaborate in real-time with extensive templates.

AI video generation from textBackground removerPhoto editing suite
📷 Photo & Video
(3.5M)
free with in-app purchases
17
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
18
TestFlight
TestFlight
TestFlight
Облегчаем бета-тестирование
Free

Easily test pre-release versions of apps and App Clips. Provide feedback to developers before public launch. Receive invites via email or public link.

Test beta app versionsTest App ClipsSubmit feedback
🛠️ Developer Tools
(788K)
free
19
VibeCode: Codex & Claude AI
VibeCode: Codex & Claude AI
VibeCode: Codex & Claude AI
Vibe Coding Anywhere - Vicoa
Free

This app allows developers to seamlessly continue AI coding sessions across multiple devices. Receive instant alerts for AI agent input and stay productive while away from your desk.

Cross-device session continuityInstant AI agent alertsReal-time agent updates
🛠️ Developer Tools
(27)
free with in-app purchases
20
Replit: Vibe Code with AI Fast
Replit: Vibe Code with AI Fast
Replit: Vibe Code with AI Fast
Apps, slides, websites, videos
Free

Build and deploy apps, websites, and games directly from your phone. Utilize AI to generate projects from natural language prompts, collaborate in real-time, and host your creations instantly with zero setup. Suitable for both beginners and experienced developers.

Build apps with natural language AIInstant zero-setup hostingReal-time multiplayer collaboration
🛠️ Developer Tools
(20K)
free with in-app purchases

FAQ about Codex

What are the best codex apps for iPhone?
ChatGPT tops our codex apps ranking as of July 2026, with a 4.8-star average from 8.8M App Store ratings, and it's free to download.
Yes — 20 of the top codex apps we rank are free to download, including ChatGPT and Codex Relay - Remote Codex App.
ChatGPT shows ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 229+ codex 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.

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