Best Deep Research AI Assistant Apps

241+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated May 2026

Every iPhone needs a few good deep research ai assistant apps. We benchmark 241+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Deep Research AI Assistant

DeepSeek - AI Assistant#1

DeepSeek - AI Assistant by Hangzhou DeepSeek Artificial Intelligence Co., Ltd

Intelligent AI Assistant
Editor's Choice
📊 Productivity
4.0😊(11K ratings)
Free
#35in Productivity
DeepSeek - AI Assistant screenshot 1
DeepSeek - AI Assistant screenshot 2
DeepSeek - AI Assistant screenshot 3
DeepSeek - AI Assistant screenshot 4
DeepSeek - AI Assistant screenshot 5

In a couple of sentences, the essence of the application and its functionality can be conveyed as follows: Experience an intelligent AI assistant that offers seamless interaction and comprehensive features to answer your questions and enhance your life efficiently. Powered by a state-of-the-art model, this free AI assistant leads global standards and is designed to provide faster speeds and enhanced capabilities.

What We Love

  • 🚀 Fast and responsive
  • 👍 User-friendly interface
  • 💡 Powerful AI capabilities
  • 🤖 Impressive reasoning and thought process

Room to Improve

  • 🤖 Censorship and bias in responses
  • 🔌 Server overload and slow response times
  • 🔒 Privacy concerns regarding data collection
Perplexity - AI Search & Chat#2

Perplexity - AI Search & Chat by Perplexity AI Inc.

Ask. Research. Trusted Answers
Strong Contender
📊 Productivity
4.8😊(476K ratings)
FreeIn-App Purchases
#5in Productivity
Perplexity - AI Search & Chat screenshot 1
Perplexity - AI Search & Chat screenshot 2
Perplexity - AI Search & Chat screenshot 3
Perplexity - AI Search & Chat screenshot 4
Perplexity - AI Search & Chat screenshot 5
Perplexity - AI Search & Chat screenshot 6

Discover a smarter way to access credible and up-to-date answers with AI-powered search and discovery. Features include guided AI search, voice or text input, threaded conversations, and a community-driven learning experience. Start your journey to better knowledge and understanding by downloading the app now.

What We Love

  • 🚀 Saves time, fast and efficient
  • 🔍 Comprehensive and detailed answers
  • 📚 Provides sources and citations
  • 🤖 Excellent AI-powered search

Room to Improve

  • 🐛 Occasional bugs and glitches
  • 🔒 Restrictions on VPN usage
  • 💰 Expensive subscription
Grok - AI Chat & Video#3

Grok - AI Chat & Video by X Corp.

The real-time AI assistant
Worth Considering
📊 Productivity
4.9😊(1.2M ratings)
FreeIn-App Purchases
#3in Productivity
Grok - AI Chat & Video screenshot 1
Grok - AI Chat & Video screenshot 2
Grok - AI Chat & Video screenshot 3
Grok - AI Chat & Video screenshot 4
Grok - AI Chat & Video screenshot 5
Grok - AI Chat & Video screenshot 6

What We Love

  • 🚀 Fast and efficient
  • 🔒 Unbiased and ethical
  • 👍 Clean and intuitive UI
  • 🤖 Powerful AI capabilities

Room to Improve

  • 🐛 Occasional errors in responses
  • 🔍 Needs more robust search/history features
  • 🔌 Requires X account for full functionality

More Deep Research AI Assistant apps to explore

4
Google Gemini
Google Gemini
Google Gemini
Your AI assistant from Google
Free

Google Gemini is your AI assistant for boosting creativity and productivity. With features like brainstorming, connecting with Google apps, studying smarter, trip planning, AI-generated imagery, and more, Gemini Advanced offers even more capabilities with a 1-month free trial. Discover the power of Google's next-gen AI at g.co/gemini/iosrequirements.

📊 Productivity
(1.8M)
5
Microsoft Copilot
Microsoft Copilot
Microsoft Copilot
Ask AI: Chat & Voice Assistant
Free

Enhance productivity and creativity with an AI assistant that helps you find information, create visuals from text, and optimize tasks with personalized responses. Experience the future of AI interaction and elevate your workflow with the ultimate AI companion - try it free for 1 month! Download now for a smarter, more efficient way to work and create.

📊 Productivity
(396K)
6
Deep Research AI Guide
Deep Research AI Guide
Deep Research AI Guide
Journal Question Search Answer
Free

A comprehensive research tool helps you learn to ask better questions, use AI effectively, and gain deeper insights in any field with features like interactive prompt templates, real-world examples, and organized categories. Subscribe now to start thinking sharper and working smarter.

🔧 Utilities
(10)
7
Claude by Anthropic
Claude by Anthropic
Claude by Anthropic
AI assistant for life and work
Free

Get instant help on various tasks with Claude, an AI assistant that offers intelligence at your fingertips. Collaborate, brainstorm, or get assistance with daily tasks while on the go. Trust Claude to be your reliable partner for all your needs. To learn more, visit the website.

📊 Productivity
(164K)
8
Chatbot AI Assistant - Genie
Chatbot AI Assistant - Genie
Chatbot AI Assistant - Genie
AI Chatbot & Image Generator
Free

Experience personalized and intelligent conversations with Chatbot 4o AI Chat - Genie. ChatGPT-powered, it offers advanced AI capabilities for engaging and informative interactions. Start chatting now to unlock a world of tailored responses and assistance.

📊 Productivity
(28K)
9
Deep Research AI Assistant
Deep Research AI Assistant
Deep Research AI Assistant
Search Deep, Seek More Profile
Free

Search and discover publicly available information about anyone instantly with our AI-powered people search tool, featuring social media lookup, background data, and more. Access a user-friendly interface to find lost contacts, research public figures, or reconnect with old friends with a subscription service that offers a free trial and flexible cancellation.

🔍 Reference
(14)
10
Chat AI: Ask Agent Anything
Chat AI: Ask Agent Anything
Chat AI: Ask Agent Anything
Chatbot & Search Assistant
Free

A user-friendly messaging app allowing real-time communication through text, voice, and video. Stay connected with friends, share media, and create group chats effortlessly. Start chatting now to experience seamless communication at your fingertips.

📊 Productivity
(323K)
11
ChatOn AI - Chat Bot Assistant
ChatOn AI - Chat Bot Assistant
ChatOn AI - Chat Bot Assistant
One Chatbot–Multiple Al Tools
Free

Get instant assistance and guidance with ChatOn - AI Chat Bot Assistant! Enhance your productivity and streamline tasks with our advanced AI technology. Sign up now for a smarter way to communicate and get things done.

📊 Productivity
(276K)
12
ChatLLM: AI Assistant & Chat
ChatLLM: AI Assistant & Chat
ChatLLM: AI Assistant & Chat
DeepAgent, Voice & AI Creator
Free

Experience AI-powered chat capabilities with access to cutting-edge models like GPT-4, Claude, and Gemini for document analysis, image generation, and web search. Start chatting intelligently today!

📊 Productivity
(2.3K)
13
Meta AI
Meta AI
Meta AI
Create AI videos. Get answers.
Free

The Meta View app allows you to manage and update your Ray-Ban Meta or Ray-Ban Stories smart glasses easily. Import, view, and share photos and videos, set up voice control with "Hey Meta," manage privacy settings, and explore interactive product tours. Get hands-free and stay in control with the Meta View app.

📊 Productivity
(131K)
14
You.com - Enterprise grade AI
You.com - Enterprise grade AI
You.com - Enterprise grade AI
Deep research, agents, 20+LLMs
Free

Experience truly personalized conversations with AI chatbots powered by GPT-4o, Gemini, and Llama 3. Get tailored responses and intelligent interactions like never before. Start chatting now for a glimpse into the future of AI communication.

📊 Productivity
(4.8K)
15
Deepsearch AI Search Assistant
Deepsearch AI Search Assistant
Deepsearch AI Search Assistant
Deep Search, Explore More
Free

Discover anyone online with ease using the DeepSearch AI Search Assistant. This powerful app allows you to quickly locate social media profiles, access publicly available information, and reconnect with friends and acquaintances. With just a name, the AI-powered search tool consolidates data from multiple platforms, providing a comprehensive social media lookup and background check in a single, user-friendly interface.

🌟 Lifestyle
(40K)
16
Manus - AI Agent & Automation
Manus - AI Agent & Automation
Manus - AI Agent & Automation
Web Dev, Slides, research
Free

Manus AI is a versatile AI assistant that can handle a wide range of tasks, freeing you up to focus on what's important. It seamlessly bridges your ideas with practical outcomes, ensuring efficient and effective results in your work and personal life.

📊 Productivity
(3.9K)
17
Comet - AI Browser & Assistant
Comet - AI Browser & Assistant
Comet - AI Browser & Assistant
Browser and AI assistant
Free
🔧 Utilities
(7.5K)
18
AI Chatbot - Nova
AI Chatbot - Nova
AI Chatbot - Nova
Ask smart chatbot & Al writer
Free

AI Chatbot - Nova is a cutting-edge application developed by ChatGPT specializing in intelligent conversational interactions. Engage in personalized conversations and get instant answers to queries. Experience the future of chatbots today!

📊 Productivity
(115K)
19
OneSearch: DeepSearch Finder
OneSearch: DeepSearch Finder
OneSearch: DeepSearch Finder
AI Chat, Deep Search Assistant
Free

ChatAI: Ask Me Anything is an advanced AI chatbot app that offers a conversational way to answer questions and provides a range of features such as text completion, code writing, homework help, art generation, and more. Contact info@begamob.com for inquiries or upgrade to Premium for an ad-free experience and access to unlimited questions.

📊 Productivity
(107)
20
Monica AI: Ultimate AI Assist
Monica AI: Ultimate AI Assist
Monica AI: Ultimate AI Assist
Chat, Search, Write, Translate
Free

Meet Monica, your all-in-one AI pal powered by cutting-edge AI models like GPT-4. From AI search to voice translation, web summaries, and AI chat, Monica is your creative sidekick for various tasks. Experience AI magic with Monica at https://monica.im – Let Monica redefine your digital world!

📊 Productivity
(6.4K)