CustomGPT OS

CustomGPT OS is sold through Gumroad as a Notion-based system for building and managing Custom GPTs.

Pricing is not something to guess at here, so check the Gumroad page for the current offer.

What you get is a workspace that lives inside Notion rather than a separate app, so you need to be comfortable working in Notion to use it.

As a no-code AI app builder, CustomGPT OS walks you through a step-by-step process for creating AI assistants that handle repetitive tasks.

The workspace includes a Learning Hub, a Brainstorming Board, an Idea Vault, Market Research tools, a Building Factory, Version Control and a Live GPT Dashboard.

That covers the path from first idea to a tracked, versioned assistant in one place.

The commercial angle is the main selling point.

You can sell the Custom GPTs you build as standalone products, or fold them into offers you already run.

If you only want a personal assistant for your own chores, the monetization tools may be more than you need, but the building process still applies.