The K tip is a Swiss consumer magazine and one of the highest readers in Switzerland. He is particularly concerned with consumer protection and appears every second Wednesday, with the exception of the summer holidays.The magazine consists of reports on consumer concerns, consumer-hostile practices in the economy, legal assistance and at least one product test.The first issue of the K-tip was published in May 1991. The consumer magazine worked until 2010 with a multi-year interruption regularly with the TV magazine Kassensturz Swiss television together. Since then, the cooperation has focused on joint product tests.The French version of this magazine is called Bon à savoir.