Demumu

Demumu is a lightweight personal safety app built for people who live alone — and for anyone who worries about a loved one living on their own. It works quietly in the background like an invisible safety net, asking for nothing more than a simple daily check-in.

If you miss consecutive check-ins, the app automatically notifies your designated emergency contact by email, so someone you trust will know when something may be wrong. This helps address serious concerns such as 'kodokushi' — deaths that go unnoticed — a real fear for many who live by themselves.

Everything about Demumu is focused on privacy, effectiveness, and simplicity: no complicated setup, no intrusive features, just a reliable daily habit that keeps the people you care about informed and gives you both peace of mind.