A Chinese personal safety app called Are You Dead? — recently rebranded as Demumu — has gone viral in recent weeks, attracting widespread media attention.
Behind its sudden popularity lie deeper social transformations, including demographic shifts and changing personal and family relationships. At the same time, demand is growing for trust-based, non-medical, easy-to-use care networks tailored to the rapid rise of one-person households.
Demumu also shows how digital technologies are not only responding to everyday safety concerns but also reshaping social and cultural norms. As traditional kinship ties and community support structures weaken, technology is stepping in to fill — and capitalise on — the gaps.
Demumu’s virality: From local to global
In mid-2025, with a development cost of around 1,500 yuan (US$210), three young Chinese professionals from Moonscape Technologies launched a personal safety app called Are You Dead?.
The app was designed to address the safety concerns of China’s growing population of people who live alone. As described on its official store page, the app aims to “protect every solitary moment with simple solutions and build a solid safety line for solo living.”
Users are prompted to click an on-screen button daily or fortnightly via their smartphones to verify they are alive. If a user fails to do so, the system automatically sends email alerts to two nominated emergency contacts.
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