China’s Viral “Check-In” App

A check-in app in China is going viral because it asks a blunt question: “Are you dead?”

The app, also known as Demumu, is made for people who live alone. The idea is simple. You set one emergency contact, then you tap a daily check-in button. If you don’t check in for a set period, the app alerts your contact so someone knows to reach out.

Why this matters goes beyond the name. More people are living alone in large cities, working long hours, and living far from family. A small “phone check-in” feature can feel like a practical backup plan when your day-to-day routine doesn’t include regular face-to-face contact.

What the “Are You Dead?” app does

• Daily check-in: You confirm you’re OK with a tap.
• Emergency contact: You add a trusted person who gets an alert if you stop checking in.
• Basic safety use case: It’s meant for solo living, especially in dense cities where neighbors may not know you.

Some people download apps like this out of curiosity. Others want a low-effort way to reduce the risk of going unnoticed after an accident or medical event.

What U.S. phone users can take from it

Even if you never use this specific app, the trend highlights a real point: your phone can be a safety tool if you set it up ahead of time.

If you live alone, commute late, travel solo, or run outdoors, a check-in plan is worth setting once and forgetting.

Similar safety options on iPhone and Android

You don’t always need a new app. Many phones already include personal safety features.

iPhone safety features to check

• Emergency contacts and Medical ID (so first responders can reach someone)
• Location sharing settings (review who can see you)
• Apple’s personal safety settings like Safety Check (to review sharing and access)

Android safety features to check

• Emergency SOS options (varies by brand/model)
• Personal Safety features on supported phones (emergency sharing, timed safety checks, and more)

Quick setup checklist for people who live alone

1. Pick one emergency contact who will actually respond.
2. Turn on emergency contacts and set your Medical ID.
3. Review location sharing and app permissions.
4. Test your SOS or check-in feature once so you know how it works.