Best Codex AI Apps

250+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated August 2026

Finding the right codex ai apps can be overwhelming with so many options. We've analyzed 250+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Codex AI Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1ChatGPTChatGPTFree4.8★ (9.8M)YesYesSep 2026
2Codex Relay - Remote Codex AppCodex Relay - Remote Codex AppFree4.3★ (42)NoNoSep 2026
3Codex AI - Remote CodexCodex AI - Remote CodexFree1.0★ (1)NoYesSep 2026
4Claude by AnthropicClaude by AnthropicFree4.7★ (252K)NoYesSep 2026
5Grok AIGrok AIFree4.9★ (1.4M)NoYesSep 2026
6Codex AI : Remote CodexCodex AI : Remote CodexFree4.8★ (19)NoYesSep 2026
7Google GeminiGoogle GeminiFree4.7★ (2.2M)NoYesSep 2026
8Perplexity - AI Search & ChatPerplexity - AI Search & ChatFree4.8★ (501K)NoYesSep 2026

Top Picks for Codex AI

ChatGPT#1

ChatGPT by OpenAI OpCo, LLC

Your everyday AI assistant
Editor's Choice
📊 Productivity
4.8😊(9.8M ratings)
FreeAdsIn-App Purchases
#1in Productivity
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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
  • 🧠 Vast knowledge base on diverse topics
  • 🔍 Helpful for research, writing, and problem-solving
  • 🤝 Feels like an intelligent companion

Room to Improve

  • 🐛 Occasional inaccuracies or inconsistencies in responses
  • 🔖 Limited to pre-2021 data, lacking real-time updates
  • 🔒 Concerns about privacy and data usage
  • 🔍 Difficulty in navigating and managing conversation history
Codex Relay - Remote Codex App#2

Codex Relay - Remote Codex App by Kang Sungyu

Codex on your phone
Strong Contender
🛠️ Developer Tools
4.3(42 ratings)
Free
#24in Developer Tools
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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.

Codex AI - Remote Codex#3

Codex AI - Remote Codex by Ariadni Deligianni

VibeCode
Worth Considering
📊 Productivity
1.0(1 ratings)
FreeIn-App Purchases
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This AI-powered assistant helps you organize tasks, plan projects, and draft content. Simply describe your needs in plain language to generate structured plans, notes, and summaries, streamlining your workflow from idea to action.

More Codex AI apps to explore

FAQ about Codex AI

What are the best codex ai apps for iPhone?
ChatGPT tops our codex ai apps ranking as of August 2026, with a 4.8-star average from 9.8M App Store ratings, and it's free to download.
Yes — 20 of the top codex ai 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 August 2026.
We track 250+ codex ai apps on the iOS App Store as of August 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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