What is the best AI chatbot app for iPhone?

Grok AI, S tier, ranked #1 of 40, rated 4.9 by 1,518,246 people.

Which AI chatbot apps are free?

40 of 40 are free to download: Grok AI (S), ChatGPT (S), Perplexity - AI Search & Chat (S), Google Gemini (S) and more. 37 of them sell in-app purchases. 3 report no in-app purchases.

Which AI chatbot app has the best App Store rating?

Grok AI at 4.9 from 1,518,246 ratings.

AppTierList › All lists › AI Chatbot

Best AI Chatbot Apps for iPhone (2026)

40 apps ranked S through F · Updated 2026-10-19 · Ranked by AppTierList, computed, never sold · JSON

Grok AI is the top-ranked of 40 AI chatbot apps on iPhone, at S tier with 4.9/5 from 1,518,246 ratings.

1
Grok AIS
Free + IAP · ★ 4.9 · 1,518,246 ratings · score 99
2
ChatGPTS
Free + IAP · ★ 4.8 · 11,396,743 ratings · score 99
3
Perplexity - AI Search & ChatS
Free + IAP · ★ 4.8 · 516,071 ratings · score 98
4
Google GeminiS
Free + IAP · ★ 4.7 · 2,352,759 ratings · score 98
5
AI Chat Assistant - ChatNowS
Free + IAP · ★ 4.8 · 145,018 ratings · score 97

What belongs in this list

Ask questions and get written answers, help with writing, and general tasks from an AI assistant in a chat.

Not here: Character or roleplay chat alone; A companion or friend persona alone; A title containing the word chat alone; Autonomous task agents alone; A search box that returns links alone

How we pick

For this list we ask the App Store the same searches a person would, in several countries, and keep every app it returns. A model reads each app's listing and rejects the ones that only mention the use case. Every app that stays is scored out of 100 from four parts, each 0 to 100 and averaged with no weights: its App Store rating, how many people rated it, where the App Store itself ranks it for this list's searches, and how recently its current version shipped. An app showing Apple's Editors' Choice badge gets a fifth part of 100, which can only lift its score. Tiers follow fixed score bands: S from 90, A from 80, B from 70, C from 60, D from 50, F below. The list's leader is S if it scores 80 or more. On a list of 20 or more ranked apps, a tier from S to D takes in new apps only up to a quarter of the top 40: an app pushed out of a full tier falls to the next tier with room, and F takes the rest. An app already in a tier keeps its place while the tier is at most 2 apps over a quarter; past that, only the apps over that margin go down, lowest score first. Equal scores share a tier, and no app has a better tier than an app ranked above it. An app keeps its tier until its score passes the band edge by more than 1 point, or a full tier or the order above moves it. Only the top 40 of a list get a tier. Read the full method →

Compare every app

1
Grok AIS
Free + IAP · ★ 4.9 · 1,518,246 ratings · score 99 · best in class
2
ChatGPTS
Free + IAP · ★ 4.8 · 11,396,743 ratings · score 99 · best in class
3
Perplexity - AI Search & ChatS
Free + IAP · ★ 4.8 · 516,071 ratings · score 98 · best in class
4
Google GeminiS
Free + IAP · ★ 4.7 · 2,352,759 ratings · score 98 · best in class
5
AI Chat Assistant - ChatNowS
Free + IAP · ★ 4.8 · 145,018 ratings · score 97 · best in class
6
Claude by AnthropicS
Free + IAP · ★ 4.7 · 281,284 ratings · score 97 · best in class
7
Chatbot AI Assistant - GenieS
Free + IAP · ★ 4.7 · 202,369 ratings · score 97 · best in class
8
Chat AI: Ask Agent AnythingS
Free + IAP · ★ 4.8 · 328,597 ratings · score 96 · best in class
9
Meta AIS
Free + IAP · ★ 4.7 · 278,184 ratings · score 96 · best in class
10
ChatOn AI - Chat Bot AssistantS
Free + IAP · ★ 4.7 · 287,145 ratings · score 96 · best in class
11
ChatBox - AI Chat with ChatbotA
Free + IAP · ★ 4.6 · 165,090 ratings · score 95 · excellent
12
Microsoft CopilotA
Free + IAP · ★ 4.7 · 1,359,816 ratings · score 94 · excellent
13
Question.AI-Math CalculatorA
Free + IAP · ★ 4.7 · 163,628 ratings · score 93 · excellent
14
AI Chat Assistant - ChatomicA
Free + IAP · ★ 4.8 · 5,162 ratings · score 93 · excellent
15
Talkie Lab - AI PlaygroundA
Free + IAP · ★ 4.7 · 59,632 ratings · score 92 · excellent
16
Lloyd - Your AI SuperpowerA
Free + IAP · ★ 4.5 · 23,619 ratings · score 91 · excellent
17
Chat Smith: AI Chatbot & AgentA
Free + IAP · ★ 4.6 · 166,609 ratings · score 91 · excellent
18
Chatbot AI: AI Chat AssistantA
Free + IAP · ★ 4.6 · 6,564 ratings · score 90 · excellent
19
Ask Assist - AI Chat BotA
Free + IAP · ★ 4.5 · 11,663 ratings · score 89 · excellent
20
AI Chatbot - NovaA
Free + IAP · ★ 4.6 · 127,211 ratings · score 88 · excellent
21
AI Assistant: Images & WritingA
Free + IAP · ★ 4.7 · 6,720 ratings · score 87 · excellent
22
Chat AI - Personal AssistantB
Free · ★ 4.6 · 1,140 ratings · score 86 · good
23
AI Chat Assistant - OrNET AIB
Free + IAP · ★ 4.6 · 784 ratings · score 86 · good
24
GoatChat: AI Chat & ChatbotB
Free + IAP · ★ 4.6 · 7,295 ratings · score 85 · good
25
AI Chat - TryChat - Chat BotB
Free + IAP · ★ 4.7 · 1,659 ratings · score 85 · good
26
Monica AI: Ultimate AI AssistB
Free + IAP · ★ 4.7 · 6,827 ratings · score 85 · good
27
AI Chat 6.0: GeniusB
Free + IAP · ★ 4.7 · 53,584 ratings · score 84 · good
28
Smart Chat: AI AssistantB
Free + IAP · ★ 4.4 · 1,214 ratings · score 84 · good
29
AI Chatbot & Design AssistantB
Free + IAP · ★ 4.5 · 8,470 ratings · score 84 · good
30
AI Chat Assistant - ChatOneB
Free + IAP · ★ 4.3 · 749 ratings · score 84 · good
31
Poe - Fast AI ChatB
Free + IAP · ★ 4.7 · 53,842 ratings · score 83 · good
32
Openchat: AI Chatbot CopilotC
Free + IAP · ★ 4.7 · 4,535 ratings · score 83 · situational
33
Chat AI: Ask Chatbot AssistantC
Free + IAP · ★ 4.7 · 15,388 ratings · score 83 · situational
34
DeepSeek - AI AssistantC
Free · ★ 3.9 · 12,300 ratings · score 83 · situational
35
Pi, your personal AIC
Free · ★ 4.4 · 2,507 ratings · score 82 · situational
36
Vibe by Mistral (ex-Le Chat)C
Free + IAP · ★ 4.8 · 1,318 ratings · score 82 · situational
37
AI+ Chat & Al Video GeneratorC
Free + IAP · ★ 4.8 · 19,278 ratings · score 81 · situational
38
Nerd AI - Math Problem SolverC
Free + IAP · ★ 4.7 · 33,111 ratings · score 81 · situational
39
GO AI Chat 5.0 Video GeneratorC
Free + IAP · ★ 4.5 · 363 ratings · score 81 · situational
40
GPT AI Assistant Chat-ChatbotC
Free + IAP · ★ 4.8 · 407 ratings · score 80 · situational

Beyond the top 40

132 more, not ranked yet

New in the last 30 days

Questions people ask

What is the best AI chatbot app for iPhone?: Grok AI, S tier, ranked #1 of 40, rated 4.9 by 1,518,246 people.
Which AI chatbot apps are free?: 40 of 40 are free to download: Grok AI (S), ChatGPT (S), Perplexity - AI Search & Chat (S), Google Gemini (S) and more. 37 of them sell in-app purchases. 3 report no in-app purchases.
Which AI chatbot app has the best App Store rating?: Grok AI at 4.9 from 1,518,246 ratings.
How many AI chatbot apps reach S or A tier?: 21 of 40. Tiers follow fixed score bands: S from 90, A from 80, B from 70, C from 60, D from 50, F below. The list's leader is S if it scores 80 or more. On a list of 20 or more ranked apps, a tier from S to D takes in new apps only up to a quarter of the top 40: an app pushed out of a full tier falls to the next tier with room, and F takes the rest. An app already in a tier keeps its place while the tier is at most 2 apps over a quarter; past that, only the apps over that margin go down, lowest score first. Equal scores share a tier, and no app has a better tier than an app ranked above it. An app keeps its tier until its score passes the band edge by more than 1 point, or a full tier or the order above moves it. Only the top 40 of a list get a tier.