Overview
- The iOS app asks people who live alone to check in daily and emails a designated contact if activity is missing for two consecutive days.
- Following international coverage, the developers announced a global brand name, Demumu, and raised the price to 8 yuan, with reports also noting a new subscription option.
- The app recently topped Apple’s paid rankings in China and has seen a jump in overseas downloads.
- The small team—three cofounders born after 1995—has thanked users and defended the minimalist design as an intentional safety feature.
- Official data show more than 92 million people living alone in China, with projections of 150–200 million by 2030, as praise from figures such as Hu Xijin contrasts with criticism that email-only, manual check-ins may alert too late.