About AltoCode
I'm Fernando Putallaz. I've been building native iOS apps since 2018. AltoCode is how I work with founders and product teams now — you hire me, not a team behind my name. On-device AI is the specialty.
How we work together
Not a kickoff and then silence. I follow the work every day and put something real in your hands every week — through prototype, design, build, and harden. The same person stays with the app, from the first sketch through App Store review.
The work
I build, rescue, and migrate native Swift and SwiftUI apps for Apple's platforms. On-device AI is the specialty — I shipped WhattaRAG, a production on-device RAG app, live on the App Store. Not a demo.
See the work → · On-device AI → · WhattaRAG on the App Store →
Let's talk.
Tell me what you are building or what is broken, and I will tell you exactly how I would approach it.
I reply within one business day.