The Marie Kondo effect: Can apps really help organise contacts on a phone?

From being the 20th employee of Google, and spending her career on some of the most iconic products in consumer software, Google and Yahoo-Marissa Mayer needs no introduction. She designed the interface for Google Search, organising the world’s information, and helped to launch Google Maps, an ambitious project in mapping the entire planet. She was also on the small team that developed Google AdWords, the platform responsible for most of Google’s revenue. At Yahoo, where she became CEO in 2012, she oversaw the acquisition of Tumblr; when she left, in 2017, she reportedly received a $186-million exit package.