Cogdex Join the beta

Private beta for Mac

Index your mind.
Offline.

A private AI assistant for the records you can never find when you need them: passports, insurance cards, medical and tax papers. Ask in plain English and get the answer from your own files. Everything runs on your Mac.

Join the beta See how it works
Cogdex
When does Maya's passport expire?
Maya's passport expires on 14 March 2027, about 5 months from now. Passport_Maya.pdf
Which of our documents expire in the next year?
Three documents expire in the next 12 months:
DocumentExpiresTime left
Maya's passport14 Mar 20275 months
Leo's driver's licence2 Jun 20278 months
Home insurance1 Aug 202710 months
3 files
When does Leo's visa expire? What's our Wi-Fi password? How old is Maya? What's my passport number? When did we last travel to India? What was our property tax last year? Who is our family doctor? What's my health insurance group number? When does Leo's visa expire? What's our Wi-Fi password? How old is Maya? What's my passport number? When did we last travel to India? What was our property tax last year? Who is our family doctor? What's my health insurance group number?

What it does

Answers from your own files.
Not from the internet.

Reads scans and photos

Snap a picture of an ID card or drop in a scanned PDF. Cogdex reads the text, including the machine-readable lines at the bottom of a passport.

Does the date math

Ask when something expires, how old someone is, or when you last travelled. Dates are worked out exactly, not guessed.

Clear, tidy answers

A single fact comes back as one sentence. Lists, like trips or renewals, come back as a neat table you can scan at a glance.

Asks when it's unsure

"Insurance number" could mean health or car. Cogdex asks which one you mean instead of picking the wrong card.

Shows its source

Every answer names the file it came from, so you can check it. If the answer isn't in your files, it says so rather than making one up.

How it remembers

Two kinds of memory, like yours.

You remember some things by looking them up, and others because someone told you. Cogdex works the same way.

Document memory

Everything you've filed

Drop documents, PDFs and photos into your Cogdex folder. Cogdex reads every page and, when you ask a question, finds the passage that answers it, even if you use different words than the document does.

Semantic search over on-device embeddings

Fact memory

Things you tell it

Some things aren't written down anywhere. Tell Cogdex once, like your blood type or your doctor's name, and it remembers exactly what you said.

Episodic facts with exact recall

Expiry alerts

Never miss a renewal again.

Cogdex spots the expiry dates in your passports, visas and licences and reminds you well ahead of time: six months, three months, one month and one week before each date.

  • Found automatically. There's nothing to set up.
  • One reminder per milestone, never a flood.
  • Everything at a glance behind the bell icon.

Private by design

Offline means offline.

Most AI assistants send your questions to a data centre. Cogdex can't: the AI model, the search index and your documents all live on your Mac. After a one-time setup download, you can turn the Wi-Fi off and it keeps working.

0files uploaded
0accounts to create
0cloud AI calls
0trackers on this site

A local AI model

An open Llama model runs on your Mac's own chip. No API keys and no cloud calls.

An index on your disk

Documents are split into passages and embedded into a SQLite file in your Library folder.

Hybrid search

Meaning-based and keyword search are blended, so exact numbers and loose wording both land.

Yours to delete

Delete a chat, a file or everything Cogdex knows from Setup, in one step. Export what it remembers first if you like.

Get started

Three steps, then just ask.

  1. 1

    Install Cogdex

    One app. On first launch it sets itself up with a one-time download of a few gigabytes.

  2. 2

    Add your files

    Drop documents, PDFs and photos into your Cogdex folder. It reads them automatically.

  3. 3

    Ask anything

    "Which of our passports expire this year?" "What's my blood type?" Answers in seconds.

Questions

Good to know.

Does it need the internet?

Only once, to download the AI model during setup. After that Cogdex works completely offline, and your questions and documents never leave your Mac.

Which Macs does it run on?

Macs with Apple silicon (M1 or newer) running macOS 12 or later, with 8 GB of memory and about 5 GB of free space. Intel Macs are not supported.

Can it get things wrong?

It can, as any AI can. That's why every answer shows the file it came from, ID numbers are shown next to the line of the document they were read from, dates are calculated exactly rather than guessed, and Cogdex says "I don't know" when the answer isn't in your files. Check anything important against the original document.

Where are my documents stored?

Your files stay in your Cogdex folder. Cogdex keeps the text it reads from them, and what you ask it to remember, in a database in your Library folder. Nothing is copied to a server, because there is no server.

Cogdex does not encrypt that database itself. It is protected by your Mac's login and by FileVault if you have it turned on, and Time Machine backs it up like any other file.

How do I remove it?

In Cogdex, go to Setup and choose Delete all Cogdex data. Then drag the app to the Trash. To also remove the private engine and models, follow the uninstall steps.

What does it cost?

Cogdex is free during the beta.

Join the private beta

I'm inviting a small group of early testers. You'll get the Mac app before anyone else and a direct line to me for feedback.

Request an invite