Râu Cao is a user on kosmos.social. You can follow them or interact with them if you have an account anywhere in the fediverse. If you don't, you can sign up here.
Râu Cao @raucao

Yay, Web Push notifications are now working on kosmos.social!

If you're on Android, you can add kosmos.social to your homescreen, and receive push notifications for mentions, likes and boosts, same as in native apps.