Upon download it generates and encrypts your private keys. This allows you to interact with the blockchain. This is a non-custodial solution and you are in charge of your interactions.
Upon generating your keys, they are encrypted with a password. If you loose your password or your secret phrase it is impossible to recover your funds!
It connects you to the DALIA blockchain - a PoA implementation of the Ethereum blockchain - by default. You have the ability of sending transactions in any other Ethereum blockchain - including Mainnet.
The app is a wallet and a chat service. It allows you to send payments anywhere in the world and interact with smart contracts. This app is all you need to have access to fully decentralized finance and services and to be able to chat about it!