INSIDE THE BUILDS
Results from my apps
iOS apps, agent kits and the tools behind them, built at night with Claude Code. Every letter starts with something that actually shipped.
A new letter every time I ship something: an app, a guide, a kit
Ship more with
Every letter is one ship: a thing I built on the side, how I built it, and what it changed.
@bydanielcho
01 /WHERE THE LETTERS COME FROM
Three places I ship from.
INSIDE THE CERTS
Results from my exams
CISSP, CISA and AWS, passed and turned into study guides. What worked on the exam, not what the textbook says.
OUTSIDE THE WORK
Results in my life
Marathon training, pickleball, the house, and what all of it costs. The numbers I would want from someone a few steps ahead.
02 /WHAT YOU GET
One ship per letter. Two minutes to read.
- What I shipped, and why that one
- How I built it, the tools and the steps
- What it changed, and what it cost to get there
EXAMPLE LETTER
Daniel Cho
Five agent kits, one drop
WHAT I SHIPPED
Five agent kits for Claude Code and Codex, packaged in one sitting.
HOW I BUILT IT
One spec file sets the anatomy. One script syncs both cuts, draws the icons, runs the validator and zips the result.
WHAT IT CHANGED
I stopped re-explaining my workflow to every new project. The kits carry it.
One ship at a time.
Free, whenever I ship, from someone building it on the side.