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List Management,Simplified.

A Project holds all of your lists. Upload a spreadsheet, text file, convert a photo of a list, or build from scratch. Track status, and invite anyone. Your first project includes a 14-day free trial. Start creating your CST lists (collaborative status-tracking lists) below.

Create New Project
$20/month per project.
One Project is the container for all of your lists — create as many lists and sections as you need. Includes a 14-day free trial and a 7-day grace period after cancellation.
Turn spreadsheets into interactive lists
Color-coded status at a glance — green, yellow, red, black
Build a list from scratch or upload your own
Share photo and video updates with your group
Up to 3 GB of video storage per project
Invite family, teammates, or collaborators with simple permission controls
Works great on your phone
Export and download your list anytime as a spreadsheet or PDF
Connect your own AI assistant (Claude, ChatGPT, or Cursor) to manage your projects — securely, with your own permissions
Real-time sync — your whole team sees list updates instantly

Gordon Lake Tech Book App Walkthrough

This video is a complete walkthrough of the Gordon Lake Tech Book App

New — AI Integration

Let your AI run your projects

You already talk to Claude, ChatGPT, or Cursor every day. Now they can manage your projects too — securely, under your own permissions.

"Add a column called Vendor to the Materials list."

New column appended, every existing row backfilled — done.

"Create a new project called Fall-Renovation."

A fresh project spun up and ready for your lists.

"Import this spreadsheet and set up my lists."

Each tab becomes a clean, editable, color-coded list.

"Export the whole project and send me the link."

A time-limited ZIP of your lists lands in your hands.

Secure by design

Your assistant signs in as you and can only touch the projects and lists you're already allowed to see. It never gets a master key — revoke access anytime from your AI client.

Connect your AI assistant

Ready in three steps — takes about a minute.

Frequently Asked Questions

Everything you need to know before getting started.

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