---
title: Notes
description: Writing on design systems, product building and the method behind the work.
url: https://secretocho.design/notes/
type: CollectionPage
---

# Notes

> Writing on design systems, product building and the method behind the work.

A seven-part series on building ProbaBaby, from the first prototype to the App Store.

[cd ~](https://secretocho.design/)

## Four platforms in four months

Oct 2026 · 9 min[cat ./notes/four-platforms-in-four-months](https://secretocho.design/notes/four-platforms-in-four-months/)

## Rules born from mistakes

Oct 2026 · 9 min[cat ./notes/rules-born-from-mistakes](https://secretocho.design/notes/rules-born-from-mistakes/)

## The sheet that closed itself

Oct 2026 · 11 min[cat ./notes/the-sheet-that-closed-itself](https://secretocho.design/notes/the-sheet-that-closed-itself/)

## A newborn app, with a newborn

Oct 2026 · 7 min[cat ./notes/a-newborn-app-with-a-newborn](https://secretocho.design/notes/a-newborn-app-with-a-newborn/)

## What Apple, Postgres and 32 languages taught me

Oct 2026 · 9 min[cat ./notes/apple-postgres-and-32-languages](https://secretocho.design/notes/apple-postgres-and-32-languages/)

## Twins found us

Oct 2026 · 10 min[cat ./notes/twins-found-us](https://secretocho.design/notes/twins-found-us/)

## A spotless website nobody could find

Oct 2026 · 8 min[cat ./notes/a-spotless-website-nobody-could-find](https://secretocho.design/notes/a-spotless-website-nobody-could-find/)