APR and APY are not interchangeable
APR is a simple yearly rate; APY folds compounding into the headline. Two products with the same APR can rank differently once you apply daily versus monthly compounds.
Use the APR/APY tool with an explicit frequency before you compare staking or money-market offers.
What yield math still ignores
Token price changes, emissions dilution, slashing, lockups, and smart-contract risk sit outside the percentage. Pair APR/APY with staking rewards and dilution tools when those assumptions matter.
Informational only — protocol docs win when numbers disagree.
Practical workflow
Copy the advertised APR, convert to APY for your assumed compound schedule, then project rewards with a conservative token price scenario — not a marketing peak.