I have noticed that most people who download Perplexity AI on their iPhone use about twenty percent of what the app is actually capable of. They type a question, read the answer, and move on. That is a perfectly reasonable way to use it, but it misses the features that make Perplexity genuinely different from everything else on iOS — the voice mode that works across your open tabs, the Deep Research function that synthesises dozens of sources into a structured report, the Comet browser that acts as an AI assistant built directly into your browsing session, and the Pro Search mode that goes several layers deeper than a standard query.
This guide covers all of it. Whether you have just downloaded the app for the first time or have been using it casually for months, the goal here is to give you a complete picture of how Perplexity AI works on iPhone in 2026 — what each feature does, how to access it, and where it is actually useful in real workflows.
Downloading and Setting Up Perplexity AI on iPhone
Perplexity AI is available as a free download from the App Store. It requires iOS 17.0 or later, so make sure your iPhone is updated before installing. Search for “Perplexity AI” in the App Store or go directly to the app page — the developer is listed as Perplexity AI, Inc.
Once installed, you have two options: use it without an account, or sign in. The no-account option gives you basic search functionality immediately. Signing in — with Google, Apple, or email — unlocks your search history, syncs your Library across devices, saves your Spaces and Collections, and is required for any paid features.
For most users, signing in with Apple ID is the fastest path. It takes about thirty seconds and immediately makes the app significantly more useful because your threads and research persist across sessions.
| Setup Step | What to Do | Time Required |
|---|---|---|
| Download | Search “Perplexity AI” on App Store — developer: Perplexity AI, Inc. | 1–2 minutes |
| iOS requirement | iOS 17.0 or later — update iPhone if needed before installing | Varies |
| Sign in | Use Apple ID, Google, or email — required for history and sync | 30 seconds |
| Notifications | Optional — allow for Discover feed updates | 10 seconds |
| First search | Tap the search bar and type or speak your first question | Immediate |
Perplexity AI iPhone setup checklist. App Store link: apps.apple.com/us/app/perplexity-ai-search-chat/id1668000334
The Main Interface: What You Are Looking At
When you open Perplexity AI on iPhone, the interface is intentionally minimal. There is a search bar at the centre, a microphone icon for voice input, and a bottom navigation bar with four sections: Home, Discover, Spaces, and Library.
Understanding what each section does saves a lot of time.
Home
This is where you start new searches and see your recent threads. A thread is the full conversation around one query — Perplexity keeps the context of your original question as you ask follow-ups, so you can go progressively deeper without losing your starting point. Each thread is saved automatically when you are signed in.
Discover
A curated feed of topics trending across Perplexity searches globally. It is useful for staying across what people are researching in your areas of interest — science, technology, business, world news — without needing to formulate a specific question. Tapping any Discover item opens it as a standard thread that you can then ask follow-up questions on.
Spaces
Spaces are persistent research environments. You create a Space for a project — a topic you are researching over time, a work project, a subject you are studying — and all related threads are saved inside it. You can also upload files to a Space and have Perplexity reference them in future queries within that Space. This is the feature most iPhone users never find but that makes Perplexity genuinely useful for sustained research rather than one-off questions.
Library
Your personal archive of saved threads, Spaces, and collections. Anything you explicitly save from a thread lands here. Think of it as your research history organised by topic rather than by date.
How to Run Your First Search on iPhone
Tap the search bar at the top of the Home screen. Type your question in natural language — you do not need to use keywords or search operators. Perplexity is designed for questions, not keyword lookups. “What are the differences between Perplexity Pro and Max?” will return a better result than “Perplexity Pro vs Max comparison.”
After you submit your query, Perplexity does three things simultaneously: it searches the live web, it selects the most relevant and authoritative sources, and it synthesises those sources into a structured answer. Every claim in the answer is tagged with a citation number. Tap any citation number to open the source directly in the app. This is the feature that distinguishes Perplexity from every other search app on iOS — you can verify every fact in the answer without leaving the thread.
Below the answer, you will see suggested follow-up questions generated by Perplexity based on what users commonly ask next on the same topic. Tap any of them to continue the thread, or type your own follow-up. The app retains full context from the original query as the conversation deepens.
How to Use Pro Search on iPhone
Standard search on Perplexity is fast and covers most everyday questions. Pro Search is the step up — it runs a more thorough web retrieval process, consults a broader range of sources, and produces longer, more structured answers. For research questions, technical topics, or anything where depth matters, Pro Search consistently delivers better results than the default mode.
To activate Pro Search on iPhone, tap the search bar, then look for the toggle that appears below the input field — it is labelled “Pro.” Switch it on before submitting your query. Free accounts get a limited number of Pro Search queries per day. Perplexity Pro subscribers ($20/month) get unlimited Pro Search across all devices including iPhone.
The difference is most noticeable on multi-part questions. Ask “What are the main differences between Perplexity Pro and Max, which one is better for academic research, and is the annual plan worth it?” — Pro Search will break this into a structured answer that addresses each part separately, with citations for pricing claims, feature comparisons, and use case guidance. Standard search tends to answer the first part and underserve the rest.
How to Use Voice Search on iPhone
Voice search on Perplexity AI iPhone is faster and more useful than most people expect. It is not a transcription tool that converts speech to text and then runs a search. It is a genuine voice interaction — you speak your question in natural language, Perplexity processes the audio, and the response comes back with the same citation structure as a typed query.
To use voice search, tap the microphone icon in the search bar. Speak your question clearly. Perplexity will submit it automatically after a brief pause, or you can tap the stop button when you are done speaking. The response loads exactly as it would for a typed query — structured answer, numbered citations, follow-up suggestions.
Voice search is particularly useful in three scenarios on iPhone. First, when you are moving and cannot type comfortably. Second, when your question is long and complex — spoken questions tend to be more naturally phrased and often produce better results than hurried keyword typing. Third, when you want to ask a follow-up question to an existing thread while your hands are occupied — tap the microphone on the thread page and speak your follow-up directly.
How to Use Deep Research on iPhone
Deep Research is one of Perplexity’s most powerful features and the one most iPhone users have not tried. It is designed for questions that require synthesising information from many sources rather than returning a quick answer — investigative topics, product comparisons, academic subjects, business research, travel planning, and similar tasks where the volume of relevant information is large.
When you activate Deep Research, Perplexity does not just run a web search. It runs multiple searches in sequence, follows the most relevant sources, cross-references findings, and then produces a structured long-form report with full citations. On complex topics, this process can take one to three minutes — significantly longer than a standard search — but the output is qualitatively different from anything a standard search returns.
To activate Deep Research on iPhone, tap the search bar, then tap the “+” icon or the feature selector that appears below the input field. Select “Deep Research” from the available modes. Type your question — or use voice — and submit. The app will show you a progress indicator as it works through its research process. When complete, the report appears as a structured thread with sections, citations, and a summary.
Deep Research is available to Perplexity Pro and Max subscribers. Free users can access a limited number of Deep Research queries per month.
| Feature | Free Plan | Pro Plan ($20/mo) | Max Plan ($200/mo) |
|---|---|---|---|
| Standard Search | Unlimited | Unlimited | Unlimited |
| Pro Search | Limited daily | Unlimited | Unlimited |
| Deep Research | Limited monthly | Full access | Full access + priority |
| Voice Search | Included | Included | Included |
| Spaces | Limited | Full access | Full access |
| File Upload | Limited | Full access | Full access |
| AI Model Selection | Default only | GPT-5, Claude, Gemini | All models + priority |
| Model Council | Not available | Not available | Included |
| Comet Browser | Free download | Free download | Free download |
Perplexity AI plan comparison for iPhone users. Pricing current as of March 2026. Annual plans available at reduced rate.
How to Use Focus Modes on iPhone
Focus modes tell Perplexity which type of sources to prioritise when answering your query. Instead of searching the entire web, you can direct the search specifically at academic papers, YouTube videos, Reddit discussions, news articles, or Wolfram Alpha for mathematical and scientific queries.
To select a Focus mode on iPhone, tap the search bar, then tap the globe or Focus icon that appears below the input. A panel slides up showing the available Focus options:
- Web — Default. Searches the full web for the most relevant results.
- Academic — Prioritises peer-reviewed papers, research publications, and academic sources. Essential for any research requiring cited academic evidence.
- YouTube — Returns results from YouTube and summarises video content without you having to watch the full video. Useful for tutorials, reviews, and explainers.
- Reddit — Surfaces discussions, recommendations, and community opinions from Reddit threads. Useful for product recommendations, experience-based questions, and niche topics.
- News — Prioritises recent news articles from established publications. Best for current events, recent announcements, and time-sensitive topics.
- Wolfram Alpha — Routes the query through Wolfram Alpha for mathematical calculations, scientific data, and quantitative analysis. Useful for anything involving numbers, formulas, or data.
For most general questions, Web Focus is correct. For research papers, Academic Focus consistently returns better sourced answers. For anything where you want to know what real users think rather than what publishers say, Reddit Focus is often underestimated as a research tool.
How to Use Spaces on iPhone
Spaces transform Perplexity from a search app into a sustained research environment. If you are working on a project over several days or weeks — researching a purchase decision, studying a topic, preparing for a meeting, tracking a developing news story — a Space keeps all your related threads organised in one place and lets Perplexity build context across multiple sessions.
To create a Space on iPhone, tap the Spaces icon in the bottom navigation bar, then tap the “+” button in the top corner. Give the Space a name that reflects the project. You can add a description and set the AI’s behaviour for that Space — for example, telling it to always cite academic sources, or to keep responses concise for quick reference.
Once inside a Space, every search you run is saved to that Space. You can also upload documents — PDFs, text files — and Perplexity will reference them in future queries within the Space. This is particularly powerful for analysing a document you have uploaded. Ask “summarise the key arguments in this paper” and then follow up with specific questions about the content — Perplexity maintains context across the full thread.
Spaces sync across all your devices. Start a research thread on iPhone during your commute and continue it on your desktop when you arrive. The full thread history carries over with no setup required.
How to Use the Comet Browser on iPhone
Comet is Perplexity’s standalone AI-powered browser for iPhone, launched on March 18, 2026. It is a separate app from the main Perplexity AI app — download it from the App Store by searching “Comet by Perplexity” — and it represents a fundamentally different way of using Perplexity’s capabilities on iOS.
Where the Perplexity AI app is a search and research tool, Comet integrates the Perplexity answer engine directly into a web browser. You browse normally, and the AI assistant is available at any point to answer questions about what you are reading, summarise the current page, research related topics, or complete tasks without you leaving the browser.
What Comet does that Safari does not
The Comet Assistant knows which tab you have open and can discuss its content in real time. If you are reading a long research paper, you can ask “what is the main conclusion of this paper?” without copying the text anywhere. If you are on a product page, you can ask Comet to compare prices across other sites and it will do the research and return a summary in the same session. If you have a calendar invite open, you can ask Comet to research the people attending, summarise the relevant background, and prepare three questions — all before you close the browser tab.
Voice mode in Comet
Voice mode is built directly into Comet for iPhone. Tap the microphone and speak your question about whatever you are currently browsing. Comet answers in the context of your open tabs, so you do not need to copy, paste, or navigate away to get an answer about the page you are reading.
Cross-device continuity
Research threads in Comet sync across iPhone, Mac, Windows, and Android. Start a research session on your desktop and pick it up on iPhone — the thread stays tied to the page with full context carried over. This is particularly useful for ongoing research tasks that span multiple sessions across different devices.
Comet pricing
The iPhone version of Comet is a free download. It launched originally on desktop at $200 per month, but Perplexity made it free for all users in late 2025. Perplexity Pro and Max subscriptions unlock additional AI model access and advanced features within Comet, available as in-app purchases starting at $20 per month.
How to Upload Files and Analyse Documents on iPhone
Perplexity AI on iPhone supports file uploads within both the main app and Spaces. You can upload PDFs, text files, and documents and then ask questions about their content directly in the thread.
To upload a file, tap the “+” icon in the search bar before typing your query. Select “Upload File” from the options that appear. Choose your document from Files or your iPhone’s storage. Once uploaded, type your question referencing the document — “summarise this paper,” “what are the key findings,” “extract all dates and deadlines mentioned” — and Perplexity will process the document content and answer based on what is actually in the file.
For sustained document research, upload the file to a Space rather than a one-off thread. This way the document is available for multiple queries over time without re-uploading it each session.
File upload is available on free accounts with limitations on file size and number of uploads. Pro subscribers get expanded access including larger files and more uploads per month.
Tips Most iPhone Users Miss
After using Perplexity AI extensively on iPhone, these are the features that make the biggest practical difference but that most users discover late if at all.
Ask follow-up questions immediately. The suggested follow-ups below every answer are generated specifically for your query. They are often the most efficient path deeper into a topic. Tapping them is faster than formulating the next question yourself and the context carries over automatically.
Use the Academic Focus for any factual claim you need to verify. Standard web search returns a mix of source types. Academic Focus narrows to peer-reviewed and research sources specifically, which is significantly more reliable for factual verification than a general web result.
Share threads directly from iPhone. Every Perplexity thread has a share link. Tap the share icon within any thread to copy the link or send it. The recipient can view the full thread including all citations without needing a Perplexity account. This is useful for sharing research with colleagues or saving a research session to reference later.
Ask Perplexity to write in different formats. On mobile it is easy to overlook that Perplexity can format its outputs for specific purposes. Ask it to produce a summary in bullet points, a table comparing options, or a structured report with headings — specifying format in your query produces output that is far more useful for particular tasks than the default prose answer.
Set Perplexity as your default search engine on iPhone Safari. In iOS Settings, go to Safari → Search Engine and select Perplexity if available, or use the Perplexity Chrome Extension equivalent for Safari workflow. Alternatively, use Comet as your default browser to route all search through Perplexity’s answer engine natively.
Use the Discover feed to find research starting points. The Discover tab is not just a news feed — it surfaces what people are actively researching on Perplexity right now. It is a useful way to find framing for topics you want to research, particularly for fast-moving subjects where the questions being asked are as informative as the answers.
Read: Perplexity Model Council Explained: Multi-Model AI Accuracy
Perplexity AI iPhone vs the Desktop: Key Differences
The iPhone app covers the full core feature set — search, Pro Search, Deep Research, Voice, Spaces, Focus modes, file upload, and Library. The desktop version adds a few capabilities that are not yet available on iPhone, and the iPhone experience has some specific advantages that the desktop does not replicate.
| Feature | iPhone App | Desktop / Web |
|---|---|---|
| Standard & Pro Search | Full access | Full access |
| Deep Research | Full access (Pro/Max) | Full access (Pro/Max) |
| Voice Search | Built-in, hands-free | Available but less convenient |
| Spaces & Library | Full access, synced | Full access, synced |
| File Upload | Available (Pro limits apply) | Available (Pro limits apply) |
| Focus Modes | All modes available | All modes available |
| Model Council | Web browser only (Max plan) | Full access (Max plan) |
| Comet Browser | Separate free app | Available Mac/Windows |
| Cross-device Sync | Full sync with desktop | Full sync with iPhone |
| Offline Access | Library only — search requires internet | Search requires internet |
Feature availability comparison between Perplexity AI iPhone app and desktop/web version. March 2026.
Getting the Most from Perplexity AI on iPhone
I want to end with the practical observation that makes the biggest difference to how useful Perplexity AI is on iPhone: the quality of your question matters more than anything else in the interface. A vague question returns a general answer. A specific question with clear context returns a specific, actionable answer.
Compare “tell me about nutrition” with “I am a 35-year-old trying to reduce inflammation — what foods should I prioritise and what should I avoid based on recent research?” The second question will return a structured, cited, research-backed answer that a general web search cannot match. Perplexity on iPhone is at its best when the question is precise, contextual, and asks for something specific.
The voice mode, Deep Research, and Spaces features are all built around this same principle — they are tools for going deeper on specific questions, not for skimming surface-level answers. The more you treat Perplexity as a research partner rather than a search engine, the more the gap between it and everything else on your iPhone becomes apparent.
Frequently Asked Questions
Is Perplexity AI free on iPhone?
Yes. Perplexity AI is a free download on the iPhone App Store and the core search functionality is available without any payment or account creation. Free users get unlimited standard search, limited Pro Search queries per day, limited Deep Research queries per month, and access to voice search, Discover, and the Library. Paid plans — Pro at $20/month and Max at $200/month — unlock unlimited Pro Search, full Deep Research, expanded file uploads, access to multiple AI models, and additional features.
What iOS version does Perplexity AI require on iPhone?
Perplexity AI requires iOS 17.0 or later. If your iPhone is running an older version of iOS, you will need to update it before the app can be installed. The app is not yet available for iPad as a dedicated iPad version.
How is Perplexity AI different from Google Search on iPhone?
The core difference is citations and depth. Google Search returns a list of links and an AI Overview snippet. Perplexity AI generates a structured answer with every claim linked to a numbered citation you can tap to verify immediately. It also supports follow-up questions that maintain full context from the original query, Deep Research for multi-source synthesis, and Focus modes that direct searches to specific source types like academic papers or Reddit. There are no ads in the Perplexity answer interface on the free tier.
What is the Comet browser and how is it different from the Perplexity AI app?
The Perplexity AI app is a search and research tool — you ask questions and receive cited answers. The Comet browser is a full web browser for iPhone with Perplexity’s AI assistant built directly into the browsing experience. In Comet, the AI can answer questions about any webpage you currently have open, summarise content, compare prices across sites, and complete web-based tasks — all without leaving your current tab. Comet launched on iPhone on March 18, 2026 and is a free separate download from the App Store.
Can I use Perplexity AI on iPhone without an account?
Yes. You can run standard searches on Perplexity AI without creating an account or signing in. However, your search history will not be saved between sessions, you cannot access Spaces or the Library, and you will not be able to continue threads after closing the app. Signing in with Apple ID or Google takes about thirty seconds and makes the app substantially more useful across sessions.
How do I access Deep Research on the Perplexity AI iPhone app?
To use Deep Research on iPhone, tap the search bar and then tap the “+” icon or the feature selector that appears below the input field. Select “Deep Research” from the available modes. Submit your question and the app will run a multi-source research process — this typically takes one to three minutes — and return a structured long-form report with full citations. Deep Research is available in full on Pro and Max plans. Free users get a limited number of Deep Research queries per month.
Does Perplexity AI work offline on iPhone?
No. Perplexity AI requires an active internet connection for all search and research functions — it retrieves information from the live web in real time, which is what enables it to provide current, cited answers. Your Library of saved threads is accessible offline for reading previously saved content, but you cannot run new searches without internet access.
