abhay-pratapsingh-ctrl/chaptr

Chaptr is a dating app concept built on top of the Sui blockchain that tries a different approach to matchmaking. Instead of swiping through photos, each user trains a personal AI agent called a Digital Twin, which learns about their personality, values, and what they are looking for in a partner. These Twins can then have automated conversations with other people's Twins to check compatibility before the two humans ever talk. The mobile app, built with React Native and Expo, is where users create their profile and train their Twin. A daily feed called the Morning Briefing has the Twin scout other people's Twins in a shared pool, hold private agent-to-agent conversations with candidates, and surface the best matches. Before seeing someone's actual profile, a user can chat with that person's AI Twin directly, unlocking a real profile only after a short exchange. Once two people match, human-to-human chat happens through on-chain messages stored using a decentralized storage system called Walrus. The matching system uses the blockchain itself to prevent a common problem in dating apps: proposing to more than one person at a time. When someone proposes a match, their Digital Twin, which exists as a blockchain token, is literally moved out of their wallet and locked inside the match proposal, so the same Twin cannot make a second proposal while the first is pending. Users also control exactly what their Twin is allowed to do without asking permission first, such as whether it can browse other profiles, start conversations with candidates, or automatically propose a match once compatibility passes a chosen score threshold. Sign-in works through Google using a technique called zkLogin, so users do not need to set up a cryptocurrency wallet or remember a seed phrase, and their Google identity is never exposed on the blockchain. Behind the scenes, an AI model from Groq runs the actual conversations between two Twins and produces a compatibility report covering a score, an overall summary, chemistry notes, and any red flags, before recommending whether to propose a match or pass. Gas fees for blockchain transactions are covered automatically so the experience feels free to use for the end user.