https://arstechnica.com/tech-policy/2019/05/google-unveils-auto-delete-for-location-web-activity-and-app-usage-data/

Google will soon let users automatically delete location history and other private data in rolling intervals of either three months or 18 months.

"Choose a time limit for how long you want your activity data to be saved—3- or 18-months—and any data older than that will be automatically deleted from your account on an ongoing basis," Google announced yesterday. "These controls are coming first to Location History and Web & App Activity and will roll out in the coming weeks."