This is a submission for the Hacktoberfest Open-Source AI Challenge Week 4: Ghost in the Machine .

What I Built

Calavera AI is an Android app for Día de los Muertos that keeps a family's memories of the people they've lost, and uses them to write a calaverita literaria for each of them. Everything runs on the phone: three open-weight models do the work, and nothing you put into the app ever leaves it.

A calaverita literaria is a Mexican tradition: a short, rhyming, affectionate (and usually cheeky) poem in which Death comes to take someone, written as if they were still here. They're read aloud, printed in newspapers and left on altars every November. They're funny on purpose. They work because they're specific: a grandmother who burned the tortillas every Sunday and blamed the stove gets a very different poem than an uncle who fixed every radio in the barrio.

That's what the app is for.…