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Comet for iOS Review: Is It Worth It?

Reviewed by TheTechVerdict Editorial · Last updated Aug 22, 2026 · Methodology

Agentic AI browser and assistant for mobile by Perplexity

Why you can trust this review

  • · Based on vendor documentation, official pricing pages, and aggregated user reviews from G2, Capterra, Trustpilot and Steam — see our methodology.
  • · Affiliate links do not affect rankings — see editorial standards

What is Comet for iOS?

Comet for iOS is an agentic AI browser and mobile assistant developed by Perplexity AI. It represents a significant shift from traditional mobile browsing or simple chatbot interfaces.

Instead of manually searching, clicking links, and synthesising information, Comet acts as an active agent. It takes a query or command, autonomously researches across the web in real-time, and returns a consolidated, conversational answer complete with citations.

The core proposition is to move from a 'search engine' to an 'answer engine' that does the legwork for you directly on your iPhone or iPad. This isn't merely a wrapped web view; it's an iOS app designed from the ground up to use Perplexity's AI in a streamlined, on-the-go format.


Who is Comet for iOS best for?

Comet is not designed to replace every browsing session. It excels in scenarios where the goal is to quickly understand a topic, get a summarised answer from multiple sources, or perform a complex, multi-step information task without the friction of a traditional search.

  • Researchers and Students: Individuals who need to quickly grasp the key points of a topic, find reputable sources, and understand different perspectives with full citation trails.
  • Professionals and Analysts: Users who require fast, full market updates, competitor analysis, or summarised reports on complex subjects, all compiled from current web data.
  • Curious Learners and Hobbyists: People who enjoy deep-diving into new topics, from history to hobbyist guides, and want a conversational, assisted research partner.
  • Content Creators and Writers: Those needing to gather factual background, find supporting sources, or brainstorm angles on a subject efficiently before starting their creative work.
  • Power Users Seeking Efficiency: Anyone frustrated with the tab-spawning nature of traditional mobile search, who values a single, coherent answer synthesised from the web.

Key features

Agentic Web Search & Answer Synthesis

This is Comet's core function. When a user asks a question, the AI doesn't just return a list of links; it actively browses the web, reads and analyses content from multiple sources, and constructs a direct, conversational answer.

It cites its sources inline with numbered superscripts, allowing users to verify the origin of each piece of information. This transforms a multi-step search process into a single Q&A interaction.

Focus Modes for Tailored Research

Comet offers different search modes that change how the AI agent operates. 'All' performs a standard, full web search. 'Academic' prioritises scholarly and research-oriented sources like Google Scholar and JSTOR.

'Writing' tailors the search to aid in drafting and composition tasks. 'Reddit' searches specifically within the platform for community-driven opinions and discussions. This allows users to guide the agent's focus based on the type of information they need.

Persistent, Interactive Threads

Conversations in Comet are not isolated exchanges. Each query and its resulting answer exist within a persistent thread.

Users can ask unlimited, detailed follow-up questions within that thread, and the AI maintains context, building upon the previous discussion. This is ideal for progressive, in-depth exploration of a topic without having to re-explain the subject in every new prompt.

File Upload & Document Interrogation

Beyond web search, Comet can process files users upload. Users can provide PDFs, text documents, or images, and the AI will read and analyse the content.

Users can then ask specific questions about the document, request summaries, or have the information within it cross-referenced with a web search. This bridges the gap between personal documents and the wider web.

Pro Search for Complex Queries

Activated by a toggle, Pro Search instructs the AI agent to perform a more thorough, iterative, and detailed investigation. It's designed for complex, multi-faceted questions where a simple answer is insufficient.

The AI will spend more time (often 30+ seconds) exploring, comparing, and synthesising information to deliver a more nuanced and full response.


Comet for iOS pricing

Comet for iOS operates on a freemium model tied to a user's Perplexity account. The free tier offers a generous amount of functionality, including standard searches with citations and access to the core AI model.

However, it is limited in key areas: users on the free plan cannot use the advanced 'Pro Search' feature, have a limited number of file uploads, and cannot switch to more powerful AI models like Claude 3.5 Sonnet or GPT-4.

Full, unrestricted access requires a Perplexity Pro subscription, which costs $20 per month or $200 per year.

Feature Free Tier Perplexity Pro ($20/mo or $200/yr)
Pro Search Not available Unlimited
File uploads Limited Unlimited
AI model choice No (core model only) Yes (Claude 3.5 Sonnet, GPT-4, etc.)

This unlocks unlimited Pro Searches, unlimited file uploads, the ability to choose between top AI models, and an increased number of queries. For a user who engages in serious daily research, the Pro tier offers good value.

The cost is competitive with other premium AI subscriptions, and the unique combination of agentic web search, model choice, and deep research capabilities is difficult to find elsewhere in a single mobile package. For casual users, the free tier remains a powerful tool, but power users will feel the constraints quickly.


What we like

  • Reliable citation system: Genuinely useful for verifying information and tracing sources.
  • Agentic search: Delivers consolidated answers that dramatically speed up initial research compared to manual browsing.
  • Focus modes: Effectively channel searches towards specific types of sources, adding valuable intent-based control.
  • Clean interface: Fast and feels native to iOS, with smooth animations and intuitive thread management.
  • Persistent threads: Enable truly conversational and context-aware deep dives into complex subjects.

What could be better

  • Occasional hallucination: The AI can misinterpret sources, making it imperative to check critical citations.
  • Limited system integration: Lacks deeper iOS integrations (like a system-wide action extension) for true assistant functionality.
  • Slow Pro Search: Can sometimes be slow, with no visual indicator of progress beyond a simple spinner.
  • Inconsistent answer quality: The quality of answers can vary noticeably between the available AI models, requiring some user experimentation.

Comet for iOS verdict

Comet for iOS is a standout and genuinely innovative application that rethinks how we find information on a mobile device. It is transformative for anyone whose phone or tablet use involves regular research, learning, or in-depth information gathering.

Comet for iOS successfully packages Perplexity's powerful web-connected AI into a focused, pleasant-to-use iOS experience. It turns what is often a frustrating, multi-app process into a streamlined dialogue.

The citation system adds a necessary layer of trust, and features like Focus Modes and file upload make it a versatile tool for a range of professional and academic tasks. However, it is not a universal replacement for all browsing.

It is less suited for purely recreational browsing, shopping, or accessing interactive web services. Users who primarily need quick fact checks or simple definitions might find a standard search engine or built-in assistant faster for those trivial tasks.

The requirement for a Perplexity Pro subscription to access its full potential is also a significant consideration, though the free tier offers a compelling taste. Students, researchers, analysts, and knowledge workers should download Comet immediately.

It is a potent productivity multiplier. Casual users with an interest in deeper learning will also find tremendous value in the free version. For those who need a general-purpose assistant to control smart home devices or set simple calendar reminders, look to Siri or other alternatives.

But for turning the vastness of the web into actionable, cited understanding on your iPhone, Comet is currently in a class of its own.

Frequently Asked Questions