Courio

Courio is a friends-only letter app: each friend designs a 3D companion that carries their letters, and on Meta Quest the companion walks through a door into your room to hand them over. That part existed before the hackathon. This week I gave the companions a voice with Meta's models: - Reading aloud: the companion reads the letter in a voice that fits its look. When a letter mixes French and English in one sentence, Muse Spark marks which words are in which language so each part gets a native voice. - Translation: one press translates the letter with Muse Spark; the original is one tap away. - Answer by voice: a headset has no keyboard, so you speak. Muse Voice Transcribe turns it into text and Muse Spark tidies it into a short letter in your own words, adding nothing you didn't say. Nothing is sent until you press Send. - Or type on a keyboard drawn in the room, and six new animated ways to open a letter. The reply is carried home by the companion and reaches your friend's phone about ten seconds later. Tested on a real Meta Quest 3 at Meta Lab, Fifth Avenue. Courio is friends-only, 16+, no ads, and the AI only runs when you press a button. Live app: https://courio-xr.netlify.app