Who runs it
.app is administered by Google Registry, and its expiry process is an extension where a certificate failure means total unavailability.
What happens after expiry
Standard gTLD sequence: auto-renew grace, redemption, pending delete.
The grace period
Around 30 days at most registrars.
Recovery after that
Redemption fees in the usual gTLD range.
Worth knowing about .app
.app enforces HTTPS at the browser level through HSTS preloading. A .app site without a valid certificate does not load at all, which makes certificate expiry considerably more serious here than elsewhere.
What is true of every extension
- The domain stops resolving the moment it expires. Website and email both stop at once, because both depend on the same records.
- Your registrar panel may still show the domain as active while the rest of the internet already treats it as gone.
- Every stage after expiry costs more than renewing did, and the last stage cannot be undone at any price.
Registry policies change. The shape of the process is stable, but confirm exact windows with your registrar before relying on a number.