Show HN: I built the US version of "Are You Dead?", China's viral check-in app

[maxtermed]

In January, a Chinese app called Sile Me ("Are You Dead?") went to #1 paid app on China's Apple App Store. One button. Tap it daily to say you're alive. Miss two days — your emergency contact gets an email. It went viral because 200M Chinese people live alone and finally had a tool that acknowledged the obvious risk.

The US has 40 million solo households — 29% of all households, an all-time high. And no good equivalent.

So I built one. Key differences: SMS instead of email, a 48-hour window instead of rigid schedules, and an Emergency Alert button — one tap, immediate text to your contact. Right now, not after two days of silence.

Tech stack: Expo/React Native, Python/FastAPI, RevenueCat for IAP. iPhone only for now.

The full story: https://imalivetoday.com/demumu-app-us