死了么APP更新2.0版本，新增签到提醒、短信通知

Group 1 - The original "Is it dead?" app has launched version 2.0 in certain regions of the App Store, featuring new check-in reminders, SMS notifications, and several bug fixes [1] - The app has officially rebranded to "Demumu" as part of its global branding strategy [1] - The app is developed by Moon Realm (Zhengzhou) Technology Service Co., Ltd., which was established in March 2025 [6] Group 2 - The app is positioned as a lightweight safety tool for individuals living alone and is currently available only on iOS [6] - The legal representative and general manager of the company is Guo Mengchu, while the founder, Lü Gongchen, serves as the financial officer [6]