Apple Upgrade: A no-interest lease that never exceeds the list price
Apple's Upgrade program offers 12–36 month zero-down, zero-interest leases on iPhone, iPad, Mac, and Apple Watch, with the option to buy at the end for the original list price minus the lease payments you've made. This means you can own the device without ever paying more than its list price if you choose to buy, though continuously upgrading via leasing could cost more than buying upfront.
