Citenook
Pick your job to see an answer from the kind of files you keep.

The private ChatGPT that lives on your Mac.

Ask it anything, write with it in any app, and ask your contracts and leases too. It can run with no internet, and answers from your files show the exact clause.

30 days free with every feature. For Macs with Apple silicon, macOS 15 or later.

Northwind Legal

Sample files, made up for this page. Click a number to see where each fact came from.

It's not only for your files

Most of the day you need a quick answer or a better sentence. Citenook does that too, privately, and keeps the proof for when it's about a client.

Ask anything, like you would ChatGPT

Explain a term, draft an outline, think through a plan. Pick Just ask and the AI answers from what it knows. With a model on your Mac there's no account and nothing leaves.

Works with Wi-Fi off

Write better in any app

Select text in Mail, Word or anywhere, press Option and Space, and fix it, shorten it or rewrite it. It can learn your style from a few of your own emails.

Before you trust an AI with client work

  • “Can I paste this into ChatGPT?”

    You don't have to. Citenook reads, searches and keeps your files on your Mac. Nothing is uploaded or synced, and we never receive your files or your questions.

  • “Which version did we sign?”

    Ask once instead of opening twenty files. When two files disagree, you see both answers, each with its source. Keep one brain per client, so answers never mix clients up.

  • “Did it make that up?”

    Check it in one click. Every fact has a small number that opens the file at the exact sentence. If your files don't say it, Citenook tells you instead of guessing.

What stays on your Mac, and what doesn't

Your files never leave it. The only choice is which AI writes the answer, and you make that choice for each chat.

A model on your Mac

Apple Intelligence, or a free model you download once. It works with Wi-Fi off, and no AI account is needed.

Nothing leaves your Mac

Your own AI key

OpenAI, Anthropic, Google or OpenRouter. Your question and the passages it needs go straight to that company, under your key and their terms. Never through us.

File names stay on your Mac

Ollama or LM Studio

Use the models you already run. Citenook finds them on its own.

On Pro

Personal details are hidden before anything is sent

When you use an online AI, names, places, emails, and phone, card, bank account and ID numbers are swapped for placeholders, then put back in the answer. Your question is hidden too. You can preview every request before it goes, on every plan.

In your sample file

What the online AI sees

Example for a lawyer. Change your job at the top to see another.

Straight answers about privacy

No certifications yet.

Citenook isn't certified for HIPAA, SOC 2 or similar rules. Check what your profession and your clients allow.

Hiding details isn't perfect.

It catches the common kinds, but it can miss unusual names, more often outside English. For the most sensitive work, use a model on your Mac.

Your AI, your terms.

With an online AI, your request goes to the company you chose, under your own key and their terms. Citenook never uses your files to train anything.

How it works

  1. Add your files to a brain

    Make one brain per client, project or subject. Add whole folders, and they stay up to date as files change.

  2. Ask like you'd ask a colleague

    No keywords to remember. Type .pdf to ask only PDFs, or in:Acme to ask only one brain.

  3. Click a number to check

    Each fact opens the file at the right page, with the exact sentence highlighted in yellow.

Or ask from any app with ⌥ Space

Writing an email or a report? Select the text, press Option and Space, and the answer appears right there. Copy it, or insert it where you're typing.

It reads the files you already have

  • PDFs, scanned ones too
  • Word documents
  • Spreadsheets
  • Text and Markdown
  • Recordings, transcribed on your Mac
  • Apple Notes
  • Obsidian vaults
  • Web pages
  • YouTube videos
  • Notion pages

Pro also helps with the bigger jobs:

Deep answer

For questions that span many files, it searches several times before it writes.

Your writing style

Replies and rewrites in a style it learns from a few of your own emails.

Workflows

Save steps you repeat, like “what's due this week, written as an email”, and run them in one click.

Why not just use ChatGPT?

ChatGPT needs your files uploaded. Citenook keeps them on your Mac and shows you where it read each answer.

QuestionChatbotsCitenook
Your filesUploaded to each chatRead and searched on your Mac
Proof for each answerRarelyThe exact sentence, highlighted in your file
Names, emails and ID numbersSent as you typed themHidden before anything is sent
See exactly what's sentNoPreview every request, on every plan
Works offlineNoYes, with a model on your Mac
Which AI answersThe provider'sYour choice, for each chat

See how Citenook compares with Elephas, Gemini Notebook (formerly NotebookLM) and AnythingLLM.

Made for work where a wrong answer costs you

  • Lawyers

    Find the clause in the signed version, with the page to prove it.

  • Accountants

    Check invoices, notices and statements without opening each one.

  • Doctors and clinics

    Find what a report or referral said, without uploading patient notes.

  • Consultants

    Answer a client's question in the meeting, not in a follow-up email.

  • Researchers

    Quote the exact passage across hundreds of papers, not a paraphrase.

  • Therapists and counsellors

    Look back through your session notes privately, on your own Mac.

Also for financial advisors, students, small business owners, and anyone with files that can't leave their hands.

Try everything free for 30 days

No card needed. Every feature is on during your free month. Then pick the plan that fits, and cancel any time.

Billing period

Standard

For your own documents

$6.58 a month

$79 billed yearly

Buy Standard
  • Answers with the exact source
  • 3 brains and 1,000 files
  • PDFs, Word, spreadsheets and text
  • Quick Ask and writing tools
  • Works offline, your own AI key, every privacy setting

Pro

Most popular

For daily work across many files

$12.42 a month

$149 billed yearly

Buy Pro
  • Everything in Standard
  • Unlimited brains and files
  • Apple Notes, web pages, YouTube, Notion
  • Recordings, transcribed on your Mac
  • Deep answer, workflows, your writing style
  • Ollama and LM Studio

Pro+

For client work, with priority help

$19.08 a month

$229 billed yearly

Buy Pro+
  • Everything in Pro
  • Priority email support
  • Early access to new features

Prices in US dollars. Yearly plans are billed once a year, monthly plans every month. Your own AI keys are billed by their services.

Questions

Something else? Write to support@citenook.com.

Is it safe to use with client or patient files?

Your files are read and searched on your Mac, and we never receive them. With a model on your Mac, nothing leaves it at all, even with Wi-Fi off. With an online AI, only your question and the passages needed are sent, with personal details hidden first, and you can preview what goes. Citenook isn't certified for rules like HIPAA, so check what your profession and clients allow.

Do you ever see my files or questions?

No. Files are read and searched on your Mac, and questions go only to the AI you choose. We receive your name and email when you get a key, and nothing about your files.

What gets sent when I use an online AI?

Your question and the passages chosen for that answer, nothing else. File names aren't sent. Names, emails, phone and ID numbers are hidden in your question, the passages and earlier messages, with the same placeholder for the same name, and put back when the answer comes in.

Does it work offline?

Yes. With Apple Intelligence or a model you've downloaded, everything happens on your Mac and no internet is needed. Online AI services, web pages and YouTube need a connection.

Do I need an OpenAI or other AI account?

No. Models on your Mac are free to use. If you want an online AI, add your own key from OpenAI, Anthropic, Google or OpenRouter, and pay them directly for what you use.

Which Macs does it run on?

Macs with Apple silicon (M1 or later) on macOS 15 or later. Models on your Mac run best with 16 GB of memory or more. With 8 GB, Apple Intelligence or an online AI is the better choice.

Are my files used to train AI?

Citenook never uses your files to train anything. Online AI services handle requests under your own account and their terms.

Ask your confidential files. Keep them yours.

Nothing uploaded. Every answer with its proof.

30 days free with every feature. For Macs with Apple silicon, macOS 15 or later.