Blinkist

Blinks Labs GmbH, commonly known as Blinkist, is a German book-summarizing subscription service based in Berlin, Germany. It was founded in 2012 and has 18 million users as of 2021.
The service provides summaries of over 3,000 bestselling non-fiction books, 15-minute reads, otherwise known as Blinks or book-in-blinks.
Blinkist is available as a web-app and a mobile application. The summaries are available in English and German.
Blinkist's competitors include Sumizeit, BUUK App, Booknotes, Snapreads, ReadingIQ, getAbstract, Instaread, BookRags and Quiddity.