Language Tutor AI (2025)

A language learning assistant that helps users acquire new vocabulary through natural conversation. The system intelligently selects words based on semantic relevance, frequency data, and the user's existing knowledge - making language acquisition more personalized and effective.

Payment Splitter (2022)

A decentralized application (DApp) for programmatically splitting payments between multiple parties, inspired by the solidarity economy. Prototype built with React, Solidity, and web3.js as part of Ethereum developer certification.