Best Codex Apps

250+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated October 2026

With an average user rating of 4.4β˜…, the codex category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.

Compare top Codex Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1ChatGPTChatGPTFree4.8β˜… (11M)YesYesOct 2026
2Claude by AnthropicClaude by AnthropicFree4.7β˜… (280K)NoYesOct 2026
3Codex AI : Remote CodexCodex AI : Remote CodexFree4.7β˜… (91)NoYesOct 2026
4Grok AIGrok AIFree4.9β˜… (1.5M)NoYesOct 2026
5Google GeminiGoogle GeminiFree4.7β˜… (2.3M)NoYesOct 2026
6GitHubGitHubFree4.8β˜… (38K)NoYesOct 2026
7XXFree4.6β˜… (11M)YesYesOct 2026
8Grok BotGrok BotFree4.9β˜… (8.3K)NoYesOct 2026

Top Picks for Codex

ChatGPT#1

ChatGPT by OpenAI OpCo, LLC

Your everyday AI assistant
Editor's Choice
πŸ“Š Productivity
4.8😊(11M ratings)
FreeAdsIn-App Purchases
#1in Productivity
ChatGPT screenshot 1
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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

  • πŸš€ Powerful and versatile AI assistant
  • πŸ‘ Intuitive and user-friendly interface
  • πŸ€– Impressive conversational abilities
  • πŸ’‘ Convenient mobile access to ChatGPT
  • 🧠 Vast knowledge base on diverse topics
  • πŸ” Helpful for research, writing, and problem-solving
  • 🀝 Feels like an intelligent companion

Room to Improve

  • πŸ› Occasional inaccuracies or inconsistencies in responses
  • πŸ”– Limited to pre-2021 data, lacking real-time updates
  • πŸ”’ Concerns about privacy and data usage
  • πŸ” Difficulty in navigating and managing conversation history
Claude by Anthropic#2

Claude by Anthropic by Anthropic PBC

AI assistant for life and work
Strong Contender
πŸ“Š Productivity
4.7😊(280K ratings)
FreeIn-App Purchases
#2in Productivity
Claude by Anthropic screenshot 1
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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

  • πŸš€ Powerful and versatile AI assistant
  • πŸ‘ Intuitive and easy to use interface
  • πŸ’‘ Innovative features like 'Projects'
  • πŸ€– Intelligent and thoughtful responses
  • πŸ“š Comprehensive knowledge base
  • πŸ” Helpful for a wide range of tasks

Room to Improve

  • πŸ”’ Concerns about privacy and data usage
  • 🚫 Limitations on free usage and throttling
  • πŸ› Occasional bugs and crashes
  • πŸ™…β€β™€οΈ Overly restrictive content policies
  • πŸ€– Lack of true conversational abilities

More Codex apps to explore

FAQ about Codex

What are the best codex apps for iPhone?
ChatGPT tops our codex apps ranking as of October 2026, with a 4.8-star average from 11M App Store ratings, and it's free to download.
Yes β€” 20 of the top codex apps we rank are free to download, including ChatGPT and Claude by Anthropic.
ChatGPT shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ codex apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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