What is the best alternative to Amazon Alexa on iPhone?

Jarvis - Voice AI Assistant, S tier, #1 in voice assistant.

Is there a free alternative to Amazon Alexa?

Yes: Jarvis - Voice AI Assistant (S tier, #1) is free, with no in-app purchases.

Yes. 1 app ranks above it in voice assistant: Jarvis - Voice AI Assistant (#1).

Amazon Alexa is A tier, #2 of 7 in voice assistant. Here is everything that competes with it on iPhone, in tier order.

1
Jarvis - Voice AI AssistantShigher tier
Free · ★ 4.9 · 162 ratings · score 89
A voice-first AI assistant that talks with you and remembers details for future conversations.
3
Google AssistantA
Free · ★ 4.7 · 66,946 ratings · score 80
Assistant app for sending texts, setting reminders, playing music, getting directions and checking the weather.
4
Voice Control - AI AssistantB
Free + IAP · ★ 4.3 · 40 ratings · score 75
Voice control app for iPhone with an AI chat assistant, real-time dictation in 50+ languages, and smart voice commands.
5
SoundHound Chat AI AppB
Free + IAP · ★ 4.5 · 894 ratings · score 70
A voice-based conversational AI assistant for questions, follow-ups, and real-time information.
6
Yandex with Alice AIC
Free · ★ 4.5 · 27,158 ratings · score 69
Yandex app with the Alice voice assistant, text and voice search, a smart camera, caller ID, price comparison, and…
7
AI Assistant: Voice ChatbotF
Free + IAP · ★ n/a · 0 ratings · score 46
An AI assistant for voice and text chat, writing, translation, summaries, and everyday tasks.

What is the best alternative to Amazon Alexa on iPhone?: Jarvis - Voice AI Assistant, S tier, #1 in voice assistant.
Is there a free alternative to Amazon Alexa?: Yes: Jarvis - Voice AI Assistant (S tier, #1) is free, with no in-app purchases.
Does anything rank above Amazon Alexa?: Yes. 1 app ranks above it in voice assistant: Jarvis - Voice AI Assistant (#1).