In Episode 29 (January 31, 2026), Sam started a new app live in Claude Cowork: a "Hollywood transformation trainer," a mobile web app personal trainer focused on upper-body muscle and progressive overload. He pointed Cowork at a folder with his PRD, typed "build this," picked a stack, and let it run. Be clear on what this page covers: the build started on air, but the episode never showed the finished app.
Cowork had gotten a lot of hype in the days before, and Sam wanted to show how it works for non-technical builders. Earlier in the same episode he'd shown ScreenEval, built in about six hours with Claude Code, and Jordan asked how hard it would be for someone to build something like that themselves. Sam's answer was to start one live.
The app idea was deliberately specific: not overall health, but a trainer that makes you look as buff as possible "for, like, my premiere as a Hollywood star."
So this is, like, what's kinda nice about Cowork. It it proposes these trade offs for you in a nice UI.
— Sam Nadler, Episode 29
We don't know from the episode. We moved to the news while it built, with a "let's see if it builds," and didn't return to it. What we can say is how the start felt: Sam liked seeing a more polished view of what it was doing and where it was in the process, though he noted the terminal shows the same trade-offs.
Use the terminal when speed matters. Jordan's take at 13:53 was that the interface doesn't really matter as long as it gets you building, but he prefers the terminal because you can run as many Claude Code sessions as you want at once. Sam agreed, describing four or five terminals at once as managing a team of little Claudes:
The pace when you're doing it like that is way faster than kinda waiting for this to go through the progress and the plan.
— Sam Nadler, Episode 29
Jordan also suggested sharing skills across a team so everyone's projects use the same design patterns. For a full comparison, see Claude Code vs Claude Cowork.
Sam gave Cowork access to a folder containing his PRD, typed 'build this', told it to check the PRD, then picked from the trade-offs it proposed (React, Supabase, a real LLM API). Cowork then showed its plan and progress as it built.
Sam described it as basically a wrapper around Claude Code in the Anthropic Mac desktop app, with the chat interface people already know. The difference he called out is that you give it access to a folder for context.
Both hosts said the interface matters less than using the best tools. Jordan prefers the terminal because you can run many Claude Code sessions at once; Sam agreed that juggling four or five terminals is faster than waiting on Cowork's plan and progress view.
Not on air. Sam started the build and we moved on to the news while it ran; the episode doesn't show the finished trainer app.
