Best Claude 3.5 Sonnet Apps

248+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated October 2026

Out of 248+ claude 3.5 sonnet apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Claude 3.5 Sonnet Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Claude by AnthropicClaude by AnthropicFree4.7★ (277K)NoYesOct 2026
2ChatGPTChatGPTFree4.8★ (11M)YesYesOct 2026
3Google GeminiGoogle GeminiFree4.7★ (2.3M)NoYesOct 2026
4Perplexity - AI Search & ChatPerplexity - AI Search & ChatFree4.8★ (513K)NoYesOct 2026
5DeepSeek - AI AssistantDeepSeek - AI AssistantFree3.9★ (12K)NoNoOct 2026
6Claude Architect Cert AssistClaude Architect Cert AssistFree—NoYesAug 2026
7ClaudeClaudeFree——NoJul 2026
8/cards: Claude Code Flashcards/cards: Claude Code FlashcardsFree—NoYesSep 2026

Top Picks for Claude 3.5 Sonnet

Claude by Anthropic#1

Claude by Anthropic by Anthropic PBC

AI assistant for life and work
Editor's Choice
📊 Productivity
4.7😊(277K 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

  • 🚀 Powerful and versatile AI assistant
  • 👍 Intuitive and easy to use interface
  • 💡 Innovative features like 'Projects'
  • 🤖 Intelligent and thoughtful responses
  • 📚 Comprehensive knowledge base
  • 🔍 Helpful for a wide range of tasks

Room to Improve

  • 🔒 Concerns about privacy and data usage
  • 🚫 Limitations on free usage and throttling
  • 🐛 Occasional bugs and crashes
  • 🙅‍♀️ Overly restrictive content policies
  • 🤖 Lack of true conversational abilities
ChatGPT#2

ChatGPT by OpenAI OpCo, LLC

Your everyday AI assistant
Strong Contender
📊 Productivity
4.8😊(11M ratings)
FreeAdsIn-App Purchases
#1in Productivity
ChatGPT screenshot 1
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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
  • 🧠 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
Google Gemini#3

Google Gemini by Google

Your AI assistant from Google
Worth Considering
📊 Productivity
4.7😊(2.3M ratings)
FreeIn-App Purchases
#3in Productivity
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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.

What We Love

  • 🚀 Intelligent and well-rounded AI
  • 👍 Smooth animations and helpful info
  • 🚀 Fast and efficient
  • 👍 Intuitive interface and easy to use
  • 🚀 Responds quickly in live mode
  • 👍 Versatile capabilities
  • 👍 Accurate and informative
  • 👍 Convenient and saves time
  • 👍 Helpful for various tasks

Room to Improve

  • 🐛 Contradicts itself and has limitations
  • 🐛 Struggles with certain questions and tasks
  • 🐛 Lacks personalization and context retention
  • 🐛 Restricted in discussing sensitive topics
  • 🐛 Sluggish performance on iPad
  • 🐛 Unable to generate images as promised

More Claude 3.5 Sonnet apps to explore

FAQ about Claude 3.5 Sonnet

What are the best claude 3.5 sonnet apps for iPhone?
Claude by Anthropic tops our claude 3.5 sonnet apps ranking as of October 2026, with a 4.7-star average from 277K App Store ratings, and it's free to download.
Yes — 20 of the top claude 3.5 sonnet apps we rank are free to download, including Claude by Anthropic and ChatGPT.
Claude by Anthropic has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 248+ claude 3.5 sonnet apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.