Coins are be “staked” or held and locked on the network for validating Proof of Stake transactions on the blockchain. Staked coins earn rewards over time. Stakeholders can unstake their coins after a certain period of time has elapsed. Staking sites typically provide an estimated % APR of what you would earn for staking on a site for a certain period of time.
Moonstake Wallet allows you to manage staking of multiple coins simultaneously on one dashboard. Rewards are sent directly from the blockchain, so you can safely receive staking rewards without the intervention of a third party. Staking specifications differ for each blockchain and these variables include interest rates fees, and lockdown periods.