The company behind the app Sileme, which translates as “Are you dead?”, targets people living alone and requires users to set one emergency contact. The app sends automatic notifications if a user does not check in for consecutive days. The company introduced an 8-yuan (about $1.15) payment scheme and said it will release a new version using the global brand name Demumu. The app surged to the top of Apple’s paid app chart, and China is estimated to have up to 200 million one-person households with a solo living rate exceeding 30 percent, according to the Global Times.