GW2 Assistant is a lifestyle app designed for iPhone users, offering convenient access to Guild Wars 2 account and character information while on the move. Without the need for an API key, users can easily check Daily Events and Boss Timers. For a more in-depth experience, generating an API token on the official ArenaNet website is necessary, granting permission to various account aspects like builds, characters, progression, and more. Inputting the key can be done by either manual entry in the settings section or through barcode scanning. Users can refresh most views by dragging down until the "refresh" prompt appears. The app requires Camera permission for barcode scanning and ensures compliance with Guild Wars 2 content terms of use.