The user interface is very intuitive, it's fast to use with an easy access from anywhere in my smartphone or computer! I like that there are many exchanges listed so you can choose which one fits your needs best (exchange rate/ fees).
It also has some other features such as cold storage wallets, hardware node etc but this isn't something i'm using currently because of its slow speed compared to others out there. If anyone would be looking into these things then they should definitely look at Argent!! Easy transfer between different currencies - low fee transactions possible when needed without waiting weeks until a transaction clears.