San Antonio, Texas
Castilloworks
A San Antonio studio that builds and runs its own companies. Five working, a sixth taking shape.
White light looks plain until it meets something with structure. Then it opens: one beam, six colors, nothing added. This studio works the same way. One founder, one light, and every company a wavelength of it.
Property operations
Iron Star
Doorstep trash valet and grounds upkeep for apartment communities in San Antonio. The unglamorous work, done like it matters.
Red runs first in the spectrum. On this wall it's the color of early mornings and hauled weight.
Visit Iron StarPrivate care & companionship
Good Company
Non-medical home care and companionship for San Antonio seniors. The same caregiver every visit, hired directly by the family.
Orange is porch-light warm: the color a kitchen makes at seven in the evening, with someone in it.
Visit Good CompanyAfter-school STEM, in development
NeuroNest
Small-group STEM sessions in San Antonio for gifted kids, the ones who take things apart to see why. First families hear first.
Green is the wavelength of things still growing. This one is growing right now.
Visit NeuroNest
Media, the founder's Instagram
broseph.ai
Short videos about free, public tools most people don't know exist. Privacy, OSINT, and the internet they don't show you.
Blue light travels farthest before it scatters. Fitting, for the account that shows how far your data goes.
Visit broseph.aiCourses & tools, first releases 2026
Studio Products
Courses, prompt packs, and open workflows from the studio's own AI pipeline. We only sell what we already use.
Violet sits at the edge of what the eye can catch. The tools here live out there too.
Visit the productsNonprofit wedding ministry
Castillo Family Marriage Ministries & Weddings
Bilingual ceremonies in English and Spanish, Bexar County, Texas. No couple turned away for financial reasons.
Magenta isn't in the spectrum. No single wavelength makes it; it only exists where the two ends of the spectrum meet. That's a marriage.
Visit the ministry
The companies.
Iron Star
Valet trash & grounds for apartment communities
Good Company
Private senior care, the same caregiver every visit
NeuroNest
After-school STEM for gifted kids, in development
broseph.ai
Privacy & OSINT videos, 923K views in June
Studio Products
Courses & tools, first releases 2026
Marriage Ministries
Bilingual ceremonies, courthouse to fully custom
Measured from San Antonio.
The spectrum doesn't stop at six. When the next company earns its place, the light is already on.
Castilloworks is a working studio in San Antonio, Texas. Meet the founder.