4hands
by Kosta, a library for people who still give a damn
Software has never been easier to make. That’s the problem. Most of what ships now works fine and feels like nothing, because nobody decided anything. An agent did, and it decided what everyone decides.
This is for people who want to make the other thing. Interfaces that feel physical. Motion that has a reason. Products that look like a person cared about them, because one did.
73 lessons across thinking, process, skills, AI and feedback. Every one is built twice, before and after, so you can see what changed instead of taking my word for it.
Every member gets a card
Sign it, keep it, share it. Yours is waiting.
Library
What you get
- Every lesson, demo and skill file, today and every one I add later
- Before and after for every decision, live in the browser
- Agent skills you can install in one line
- Your own signed member card
- Community
- 1:1 sessions with me
$149, once. No subscription, no tiers, no upsell. 4 lessons are free with an account, so you can check I’m not full of it first.
The cause
Half the revenue from every sale until January 1 goes to Neda’s treatment, and every donation goes there in full. $0 so far. See every dollar.
About me
I’m Kosta, founding designer at Steel. Before that I co-founded Adria, a two-person studio that worked with a16z and YC companies like Chaos Labs, Whop and Ostium. I’ve spent the last few years teaching designers and engineers to apply design principles: first with systems, now with skills.
Everything I know about taste is in here. Most of it I learned by getting it wrong in front of a client.