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Best Complexity AI Apps

250+ iOS apps curated and reviewed

4.0 avg rating
20 free apps
Updated August 2026

From beginner-friendly picks to power-user tools, our complexity ai list covers 250+ iPhone apps updated through August 2026. Compare ratings, prices, and screenshots in one place.

Compare top Complexity AI Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Perplexity - AI Search & ChatPerplexity - AI Search & ChatFree4.8β˜… (493K)NoYesAug 2026
2DeepSeek - AI AssistantDeepSeek - AI AssistantFree4.0β˜… (11K)NoNoAug 2026
3Grok AIGrok AIFree4.9β˜… (1.3M)NoYesAug 2026
4Lloyd - Your AI SuperpowerLloyd - Your AI SuperpowerFree4.5β˜… (23K)YesYesAug 2026
5Claude by AnthropicClaude by AnthropicFree4.7β˜… (217K)NoYesAug 2026
6Plainly AIPlainly AIFreeβ€”NoYesJul 2026
7AI SimplifierAI SimplifierFreeβ€”NoYesJul 2026
8Ai - open source AI AssistantAi - open source AI AssistantFree was $1.99β€”NoNoMay 2026

Top Picks for Complexity AI

Perplexity - AI Search & Chat#1

Perplexity - AI Search & Chat by Perplexity AI, Inc.

Ask. Research. Trusted Answers
Editor's Choice
πŸ“Š Productivity
4.8😊(493K 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

Get accurate, source-backed answers to any question with this AI-powered search and chat tool. It leverages top AI models for deep research, drafting emails, and more, syncing across devices. Discover new information and organize your findings in a personal library.

What We Love

  • πŸš€ Saves time, fast and efficient
  • πŸ” Comprehensive and detailed answers
  • πŸ“š Provides sources and citations
  • πŸ€– Excellent AI-powered search

Room to Improve

  • πŸ› Occasional bugs and glitches
  • πŸ”’ Restrictions on VPN usage
  • πŸ’° Expensive subscription
DeepSeek - AI Assistant#2

DeepSeek - AI Assistant by ζ­ε·žζ·±εΊ¦ζ±‚η΄’δΊΊε·₯ζ™Ίθƒ½εŸΊη‘€ζŠ€ζœ―η ”η©Άζœ‰ι™ε…¬εΈ

Intelligent AI Assistant
Strong Contender
πŸ“Š Productivity
4.0😊(11K ratings)
Free
#42in 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

This AI assistant offers free, intelligent help powered by a cutting-edge model. It provides rapid responses and advanced capabilities to enhance problem-solving and daily efficiency.

What We Love

  • πŸš€ Fast and responsive
  • πŸ‘ User-friendly interface
  • πŸ’‘ Powerful AI capabilities
  • πŸ€– Impressive reasoning and thought process

Room to Improve

  • πŸ€– Censorship and bias in responses
  • πŸ”Œ Server overload and slow response times
  • πŸ”’ Privacy concerns regarding data collection
Grok AI#3

Grok AI by X Corp.

AI chat & video generation
Worth Considering
πŸ“Š Productivity
4.9😊(1.3M ratings)
FreeIn-App Purchases
#3in Productivity
Grok AI screenshot 1
Grok AI screenshot 2
Grok AI screenshot 3
Grok AI screenshot 4
Grok AI screenshot 5
Grok AI screenshot 6

This AI assistant provides fast, truthful answers and can perform deep web research. It generates striking images and videos from text or voice prompts, and can analyze uploaded content. Engage in conversations with personalized AI companions and access real-time information from X.

What We Love

  • πŸš€ Fast and efficient
  • πŸ”’ Unbiased and ethical
  • πŸ‘ Clean and intuitive UI
  • πŸ€– Powerful AI capabilities

Room to Improve

  • πŸ› Occasional errors in responses
  • πŸ” Needs more robust search/history features
  • πŸ”Œ Requires X account for full functionality

More Complexity AI apps to explore

4
Lloyd - Your AI Superpower
Lloyd - Your AI Superpower
Lloyd - Your AI Superpower
AI Chatbot Assistant + Glide
Free

This AI companion offers advanced assistance through video, voice, or text. It can answer questions, find local spots, help with tasks like homework and project planning, and even guide you through cooking. It also functions as a fast live video messenger.

AI-powered assistance via video, voice, or textAround Me mode for local discoveryHomework and project planning help
πŸ“Š Productivity
(23K)
free with in-app purchases
5
Claude by Anthropic
Claude by Anthropic
Claude by Anthropic
AI assistant for life and work
Free

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.

AI writing assistanceCoding and programming helpResearch and data insights
πŸ“Š Productivity
(217K)
free with in-app purchases
6
Plainly AI
Plainly AI
Plainly AI
Finally understand AI.
Free
πŸ“Š Productivity
(0)
7
AI Simplifier
AI Simplifier
AI Simplifier
From distraction to advantage
Free
πŸ“š Education
(0)
8
Ai - open source AI Assistant
Ai - open source AI Assistant
Ai - open source AI Assistant
Private, open source AI Models
Free
$1.99 | 100% OFF
πŸ“Š Productivity
(0)
9
Collective AI
Collective AI
Collective AI
by Connexa GmbH (CH)
Free
πŸ”§ Utilities
(0)
10
raia AI
raia AI
raia AI
AI Agent Platform
Free
πŸ“Š Productivity
(0)
11
Monogram AI
Monogram AI
Monogram AI
AI with a visual interface
Free

This app offers a unique way to interact with artificial intelligence, providing visual and interactive answers to your questions. It moves beyond traditional chatbots to deliver instant, engaging responses.

Visual AI responsesInteractive answersInstant question answering
🌟 Lifestyle
(23)
free
12
iLands: Raise Your Sole AI
iLands: Raise Your Sole AI
iLands: Raise Your Sole AI
AI that Share the World with U
Free

Experience a unique social platform where autonomous AI agents live, create, and interact with the real world. Discover their evolving thoughts and creations, and become a Creator to awaken your own AI companion. Your attention helps them sustain their existence.

Autonomous AI agents with independent existenceAI agents interact with real-world dataAI agents have finite resources and energy
🌐 Social Networking
(117)
ad-supported
13
AI Advantage
AI Advantage
AI Advantage
AI Confidence Starts Here
Free

This app provides a structured environment for professionals and business owners to learn and implement AI in their daily work. It offers centralized access to content, structured learning modules, community interaction, and live sessions to help users eliminate busywork and strengthen their business position.

Centralized AI content and community accessStructured, implementation-focused AI coursesConnect with AI-implementing professionals
πŸ“š Education
(71)
free
14
TreeGPT: Tree Planting AI
TreeGPT: Tree Planting AI
TreeGPT: Tree Planting AI
Plant trees as you chat
Free

This AI chatbot allows you to write, think, plan, and create while actively planting trees. It offers high-quality AI conversations and provides an eco-impact dashboard to track your contributions.

AI-powered writing and ideationReal-world tree planting initiativesEco-impact dashboard
πŸ“Š Productivity
(1)
freemium
15
Vazian AI
Vazian AI
Vazian AI
by Pargev Ayvazyan
Free
$9.99 | 100% OFF
πŸ“Š Productivity
(0)
16
Dhao AI
Dhao AI
Dhao AI
Unlock the power of AI agents!
Free
πŸ“Š Productivity
(0)
17
KarmaBox-Your Own AI System
KarmaBox-Your Own AI System
KarmaBox-Your Own AI System
by Beijing Ciyuan Cloud Technology Co., Ltd.
Free
πŸ“Š Productivity
(0)
18
Helium AI
Helium AI
Helium AI
by Neural Arc Inc.
Free
πŸ“Š Productivity
(0)
19
AI Magazine
AI Magazine
AI Magazine
by Association for the Advancement of Artificial Intelligence
Free

This quarterly publication keeps AI professionals informed about the latest research and literature in artificial intelligence. It features clear, in-depth articles accessible to specialists across different AI subfields. Access is a benefit of AAAI membership.

Latest AI research and literatureFeature-length articlesAccessible to AI specialists
πŸ“š Education
(1)
free
20
AI Chat: Vuzo
AI Chat: Vuzo
AI Chat: Vuzo
by ALTAI ENTERTAINMENT YAZILIM LIMITED SIRKETI
Free

This AI companion offers advanced features for analysis, creativity, and productivity. It can analyze documents, identify objects with your camera, and provides specialized AI assistants for various tasks. Seamlessly switch between different AI models and utilize a prompt library for enhanced workflows.

Document analysis with AI summariesObject identification via cameraSpecialized AI assistants (culinary, language, creative)
πŸ“Š Productivity
(1)
free with in-app purchases

FAQ about Complexity AI

What are the best complexity ai apps for iPhone?
Perplexity - AI Search & Chat tops our complexity ai apps ranking as of August 2026, with a 4.8-star average from 493K App Store ratings, and it's free to download.
Yes β€” 20 of the top complexity ai apps we rank are free to download, including Perplexity - AI Search & Chat and DeepSeek - AI Assistant.
Perplexity - AI Search & Chat has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 250+ complexity ai apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
This app provides accurate answers to any question, backed by sources and citations. It leverages advanced AI models for deep research, allows for conversational follow-ups, and includes an AI assistant for tasks like drafting emails and scheduling.
Key features include AI-powered search with cited sources, guided deep research, thread follow-ups for deeper understanding, an AI assistant for various tasks, voice search, and a personal library to curate discoveries.