Daedalus is a full node wallet, developed by IOHK, which will allow you to store ada, the native cryptocurrency of the Cardano blockchain.
Daedalus is a Hierarchical Deterministic (HD) wallet, allowing you to create an infinite set of keys from a single seed (We call the seed the 12-word Daedalus wallet recovery phrase).
Whenever you want to move your wallet or open it on a different device, you will only need to enter your 12-word Daedalus wallet recovery phrase and the HD algorithm will find all your ada. This means you will never have to worry about managing lots of 12-word Daedalus wallet recovery phrases or files for keys.
More information can be found at https://www.cardano.org/en/the-daedalus-wallet/