Helena
DeMaria-Williams
I’m a software engineer and former brand marketer. I build apps and search tools, and write about AI, technology and culture.
Advisory
Building
Composition
Composition is a body-composition tracker for iPhone. It reads the trend behind your weigh-ins, then tells you every week whether you’re holding muscle, dropping fat, or spinning your wheels.
Visit →Tend
Tend is a calm cleaning schedule for iPhone. It remembers when you last did each job and shows which room needs you most, so when you only have twenty minutes, you know where to spend them. The list lives in the app, not in your head.
Visit →The Skin Formulary
Ingredient-first search for skincare products. Compare what’s actually in the bottle, not what’s on the label.
Visit →Hard Tech UK
A directory of the UK’s hard tech ecosystem — startups, investors, and open roles across robotics, quantum, aerospace, and deep tech.
Visit →These are part of Pearl — a collection of tools for finding information that’s genuinely hard to search.
Personal
Writing
Newsletter
A newsletter about software development, generative AI, and the creator economy.
Read on Substack →