Aviv is a software-based cryptocurrency wallet that provides users with a secure portal to the Starknet Layer-2 network on Ethereum. As a non-custodial wallet, it gives users full control over their private keys and funds. The company's mission is to offer a user-friendly and secure experience for managing cryptocurrencies and NFTs, engaging with DeFi protocols, and exploring the growing ecosystem of dApps on Starknet. It emphasizes features like account abstraction to simplify user interactions and enhance security.