Japan Alerts

Minor technical and visual improvements for a better experience. Japan Alerts now starts more smoothly and more reliably, opening straight into your alert list even when the connection is poor. A few visual details have been polished along the way, and a handful of screens now read correctly in every language the app supports. Thank you for using Japan Alerts. Stay safe.

Your family, one tap away. The family group is the heart of Japan Alerts: the people you want to reach first when something happens, and the ones who want to know you are safe. This version makes that connection effortless from start to finish. Creating a group takes moments. Joining is the same simple step whether you tap the button or open a link someone sent you, and the app tells you exactly where you stand at every point. Your group stays with you: through a weak signal, through closing the app and coming back, and onto a new phone, where your place in the family is waiting for you. The people who matter most, ready before you need them. Thank you for using Japan Alerts. Stay safe.

The same watchful app, now steadier when it matters most. When a major earthquake strikes, everyone opens the app in the same moment. We reworked how alerts and the alert list are delivered so they stay fast and dependable during exactly that surge, when you most need to see what is happening and where. We also made the nearby-shelter map load more quickly and more reliably, so the places that can keep you safe are ready the instant you open it. The rest of this version is quieter work: improvements to stability and clarity across the app. The app you rely on, ready for the moments that matter most. Thank you for using Japan Alerts. Stay safe.

Same watchful app, now with more accurate alerts. You can now set your place by simply choosing your prefecture, with no GPS and no map. It is the fastest way to receive the alerts that genuinely concern you, and it asks for no location sharing at all. The rest of this version is devoted to edge cases, those rare situations where an alert could go astray: a distant tremor with no felt effect treated as an emergency, a ward of a major city labelled with the name of its prefecture, an evacuation order attached to the wrong place, a safety check-in request arriving with no alert to explain it. These situations are now handled correctly. We also revised several screens so they stay clear when you have given only a prefecture. Set your places once. We handle the rest. Thank you for using Japan Alerts. Stay safe.

Same watchful app, now lighter and faster. Live alerts stay in sync while using far less background battery and data, with quicker and more dependable delivery across the app. We also refined a few small interface details to make everyday use clearer. Set your places once. We handle the rest. Thank you for using Japan Alerts. Stay safe.