The News app .
To open the story later on your iPhone, iPad, or Mac, do one of the following:
iPhone: Open the News app, tap Following, tap Saved Stories, then tap the story.
iPad: Open the News app, tap Saved Stories in the sidebar, then tap the story.
Mac: Open the News app, click Saved Stories in the sidebar, then click the story.
Open the News app on your Apple Watch.
Wake iPhone, then open the App Switcher. (On an iPhone with Face ID, swipe up from the bottom edge and pause; on an iPhone with a Home button, double-click the Home button.)
Tap the button that appears at the bottom of the screen to open News.