WhenADA.com provides you a solution to quickly check on your staked ADA coins. The tool gives different information such as: show all the rewards collected per epoch, show all the wallets linked to the viewed stake key, view information about the pool where the delegator is currently delegated to an overview of the staking account, graphics showing the evolution of the earned coins with cumulation plus APY tracking and finally, a countdown until next payday!
Using the tool is fairly simple: Provide a stake address or a wallet address (or partial) in the search box and the system will grab all the data from the cardano blockchain and compile a report for you.
Plus, if the staking address is new, WhenADA will calculate the date of the very first rewards and give all the information needed about the future payout frequency. If you are a Cardano stake pool operator, this feature might interest you as the question about first rewards happens quite often!