Card IndexBY BRAIN INDEX

Your information stays yours.

We make it
easier to
work with.

A clearer way to work with your information.
People, companies, and next steps in intuitive cards — with built-in AI to help make sense of your notes.

Take a look inside

Built-in AI. You stay in control.

A vintage card-index box filled with paper cards in warm sunlight
English Card Index search demo with fictional contacts John Jay and Sarah Kay
A familiar idea.
New possibilities.
The card index, reimagined for your phone
01

People & companies

02

History & context

03

Smart notes

04

Next steps

Less system. More substance.

Remember the person.
Not the row number.

You already have the information. Make it easier to live with.

01 — THE USUAL WAY

It’s all written down.
But where?

A number in your contacts. Call notes somewhere else. A follow-up in your head. Putting it together means opening another spreadsheet.

02 — WITH CARD INDEX

One person.
The whole story.

Open a dossier and pick up where you left off: who they are, what you discussed, and what comes next.

A
Atelier NorthDesign studio · example
Anna · founderDiscussed a new project
Send a proposalNext step · Thursday
Dossier structure illustration, not an app screenshot

Demo screens · fictional data

Everything in its place

Three sections.
One clear view.

No hours spent learning a system.
Open it. Get on with your day.

English demo screens adapted from the app. Names and activity are fictional.

SMART NOTE · BUILT-IN AI

First, the thought.
Then, the order.

You don’t have to sort every thought into a form. Write a note in your own words: Smart Note helps identify companies, contacts, and tasks.

Review first. Save when you’re ready.

EXAMPLE NOTE
“Spoke with Anna at Atelier North. I need to send her a proposal for the new project on Thursday.”
CompanyAtelier NorthContactAnnaTaskSend a proposal

An example of note parsing, not a live AI demo. Notes are processed in the app.

Context, not cells

People, companies, and agreements belong together, not scattered across unrelated lists.

Your data. Your control.

Our principle: your information belongs on your device or in your own sources. Card Index is a tool for working with it, not a place to hand it over.

Right there with you

Made for the moment after a meeting, a quick call, or a thought while you’re on the move.

A few details

Good question.

What Card Index is.
And what it isn’t trying to be.

Is this another CRM?

No. Card Index is a personal mobile interface for business information. People and companies, conversation history, and next steps come first, not reporting and funnels. It does not claim to replace every feature of a corporate CRM.

Can I connect my own database?

Connecting your own sources through API or MCP integrations is part of the product direction. Available connections depend on the app version; universal database and CRM connections are not available in the current beta.

What does Smart Note do?

It helps turn free-form text into structured records: companies, contacts, tasks, and events. You can review the result before saving. AI note processing needs an internet connection; this is not a promise of full AI search across your database.

Where can I download the app?

The Android app is being prepared for publication on Google Play. We will add a verified download link after release. A launch date, pricing, and iOS availability have not been announced.

Is Card Index a cloud storage service?

No. The product is being built as a tool for information on your device and in sources you control, not as a service for storing your working data with BIX. The current beta is still being aligned with this model; storage options depend on the build. AI processing is separate from storage: it needs internet access and may send note content to an external AI provider.

CARD INDEX · BY BRAIN INDEX

Good connections
deserve a good memory.

A personal card index for your phone.
Preparing the Android app for Google Play.

Google Play · publication in preparation
In the meantime, meet the app

Card Index

English Card Index home demo with fictional contacts and activity

Demo screens · fictional data

About data on this website

This website introduces the product. It has no registration form, payment form, or third-party analytics. Your language preference is stored only in your browser. When published, the hosting provider may keep technical request logs. This describes the website, not the app’s data policy.