A Chinese phone application called “dead or alive” that helps users check in daily has become a top-ranked app, reflecting the trend of solo living among the country’s young people.

The sileme app, or “Dead or alive” in English, is a wordplay from China’s food delivery giant Ele.me (are you hungry), which was recently rebranded by its owner Alibaba Group Holding to Taobao Shangou.

Alibaba is the owner of the South China Morning Post.

The simply designed and functioning app costs eight yuan (US$1.15) and users can check in by touching the giant green button every day to confirm their “alive” status.

Failing to check in for two days in a row will result in the app sending an email to the emergency contact person.