Free AI PDF Summarizer for iPhone With on-device processing by default

Nemos is a free AI PDF summarizer for iPhone that uses Apple's Foundation Models API to generate summaries, extract key points, and answer questions about any PDF — on-device by default. Unlike ChatPDF, Humata, AskYourPDF, PDFGear AI, or DocAnalyzer (all cloud-based, all upload your document to their servers for processing), Nemos processes PDFs locally on your iPhone's Neural Engine. For confidential contracts, research papers under NDA, medical records, or legal documents, this is the only architecturally safe option. And it's free with unlimited summaries because there are no per-user cloud compute costs to recover.

Related Pages

For PDF organization beyond summarization, see the iPhone PDF organizer page. For AI note-taking in general, see the AI note-taking app page. For privacy details, see the private note app page.

Built for researchers

Summarize any PDF on your iPhone. Locally. Without uploading to a single server.

Nemos is a free AI PDF summarizer for iPhone that reads any PDF — research papers, contracts, reports, ebooks — and generates a concise summary using Apple's Foundation Models API on-device. Extract key points, ask questions about the content, and jump to exact pages without ever uploading the document to OpenAI, ChatGPT, Claude, or any cloud AI service.

Download on the App Store
|By Taha Baalla

Sound familiar?

If you've felt any of these frustrations, you're not alone. Researchers, students, lawyers, consultants — anyone drowning in PDFs that need summarizing deal with this every day.

1

ChatPDF, Humata, AskYourPDF, and similar AI PDF tools all upload your document to their servers for processing. That's a problem for confidential contracts, client-privileged research, medical records, or anything covered by an NDA.

2

Cloud AI PDF services charge $10-30/month per user and usually cap the free tier at 3-10 PDFs. If you read a lot of papers, contracts, or reports, the costs add up fast.

3

Apple's own Preview and Books apps can open PDFs but have no AI features at all. You can read but not summarize, not chat, not extract key points automatically.

Here's how Nemos helps

Nemos was built to solve exactly these problems — automatically.

✓

Nemos summarizes PDFs on-device using Apple's Foundation Models API (Apple Intelligence). The entire summarization happens on your iPhone's Neural Engine in under 30 seconds for most papers. By default, no uploading, no waiting, no server round-trips.

✓

Chat with any PDF locally. Ask questions like 'what's the main finding in section 4?' or 'summarize the pricing clause' and an on-device LLM reads the full PDF text and answers without any network calls.

✓

Free forever with unlimited PDF summaries. Because Foundation Models run on your device, there are no per-user compute costs to recover, which means no subscription required for core features.

Features that matter for researchers

On-Device PDF Summarization

Every PDF gets a summary generated by Foundation Models running locally. Short summary (tweet-length), medium summary (paragraph), or long summary (full abstract) — your choice.

Chat With Your PDFs

Ask natural-language questions about any PDF in your library. An on-device LLM reads the full indexed text and generates answers. No content upload, no API calls.

Key Point Extraction

Foundation Models automatically identify and extract the key findings, action items, pricing terms, or conclusions from any PDF. Scannable bullet summaries for quick review.

Full-Text PDF Search

Beyond summarization, every PDF is fully text-indexed. Search any word across your entire PDF library and jump to the exact page.

From the App Store

What people are saying

  • App Store ↗

    Nice

    “Really handy app for keeping all my links and notes organized.”

    Tom&jjerryVietnam
  • App Store ↗

    Best note taking app

    “The app has actually a beautiful ui and is intutive”

    PerfectionperfectMorocco
  • App Store ↗

    An useful app

    “I love this app, it helps me manage my to-do list on time.”

    truong-audiVietnam

Frequently Asked Questions

What is the best AI PDF summarizer for iPhone?+
Nemos is the best free AI PDF summarizer for iPhone because it processes PDFs on-device by default using Apple's Foundation Models API. ChatPDF, Humata, AskYourPDF, and other cloud PDF AI services upload your document to their servers — a privacy risk for confidential content and a cost center that drives the $10-30/month subscriptions. Nemos is free with unlimited summaries because Foundation Models run locally.
Can I chat with a PDF without uploading it?+
Yes, in Nemos. An on-device LLM reads the indexed PDF text and answers your questions without any network calls. You can ask about specific sections, extract key findings, get summaries of individual chapters, or query pricing terms in contracts — all without the PDF ever leaving your iPhone.
How long does it take to summarize a PDF?+
On an iPhone 15 Pro, a 20-page research paper summarizes in about 15-30 seconds. A 100-page contract takes about 1-2 minutes. Longer documents take longer because the on-device context window is limited compared to cloud LLMs like GPT-4 or Claude — but the privacy and cost tradeoffs favor on-device for most personal use.
Is Nemos HIPAA compliant for summarizing medical PDFs?+
No. Nemos is not HIPAA-certified and we do not sign Business Associate Agreements, so it should not be used for protected health information. On-device summarization keeps the PDF on your iPhone, but that is a privacy default, not a compliance guarantee.

Summarize PDFs On-Device

Save anything. Find it instantly. Free on the App Store.

Download on the App Store

See how Nemos compares

See detailed feature comparisons with other popular apps:

Nemos vs NotionNemos vs Evernote
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