Fortune:

Retired banker Masako Wakamiya was frustrated by the lack of mobile games that catered to the elderly, who have a tougher time keeping up with the action-packed games that are popular with teens. So the 82-year-old from Japan started taking online tutorials to learn how to write software code.

And:

Wakamiya will be the oldest developer attending WWDC, Apple’s annual developer conference that starts Monday in San Jose, Calif. Like many of her fellow attendees, Wakamiya’s free app, called Hinadan, is available in Apple’s App Store, and she is eager to create more.

In contrast, the youngest attendee at this’s year’s WWDC is Yuma Soerianto, a 10-year old boy from Melbourne, Australia who started coding at age six by following online courses on Code.org and from Stanford University that he found on Apple iTunes U, which provides free college courses online. In four years, he has created four apps for Apple’s App Store, including Weather Duck, a weather app for kids.

Welcome, Masako. Welsome Yuma. Have a great week!