Best Openai Api Apps

250+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated September 2026

If you already know Cumbersome, this is the deeper bench. 250+ openai api apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.

Compare top Openai Api Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Cumbersome: AI LLM API ClientCumbersome: AI LLM API ClientFree4.9★ (83)NoYesOct 2026
2Liquid ApolloLiquid ApolloFree4.5★ (649)NoNoOct 2026
3ChatGPTChatGPTFree4.8★ (11M)YesYesOct 2026
4Chat API – AI WrapperChat API – AI WrapperFree4.2★ (5)YesYesSep 2026
5LLM API RequestLLM API RequestFree—NoYesJun 2026
6DeepSeek - AI AssistantDeepSeek - AI AssistantFree3.9★ (12K)NoNoOct 2026
7Chat AI PlusChat AI PlusFree4.7★ (1.7K)NoYesOct 2026
8NexraNexraFree—NoNoJul 2026

Top Picks for Openai Api

Liquid Apollo#2

Liquid Apollo by Liquid AI, Inc.

Fast, private, and reliable AI
Strong Contender
🔧 Utilities
4.5😊(649 ratings)
Free
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Access a wide range of AI language models, both locally on your device and through cloud APIs. This app allows you to chat with open-source models, connect to your own hosted LLMs, or utilize services like OpenRouter for broad model access.

What We Love

  • 🚀 Great app
  • 🚀 Works well with OpenRouter
  • 🚀 Excellent for running local models
  • 🚀 Convenient one-time purchase
  • 🚀 Clean and intuitive UI
  • 🚀 Supports voice chat and shortcuts

Room to Improve

  • 🐛 Crashes frequently
  • 🐛 Glitches when editing messages
  • 🐛 Inconsistent message formatting
  • 🐛 Slow performance with larger conversations
  • 🔒 Unable to disable app transport security
  • 🔋 High battery consumption with some models
ChatGPT#3

ChatGPT by OpenAI OpCo, LLC

Your everyday AI assistant
Worth Considering
📊 Productivity
4.8😊(11M 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

More Openai Api apps to explore

FAQ about Openai Api

What are the best openai api apps for iPhone?
Cumbersome: AI LLM API Client tops our openai api apps ranking as of September 2026, with a 4.9-star average from 83 App Store ratings, and it's free to download.
Yes — 20 of the top openai api apps we rank are free to download, including Cumbersome: AI LLM API Client and Liquid Apollo.
Cumbersome: AI LLM API Client has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ openai api apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.