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SHINDO sees it coming.

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Japan shakes. SHINDO speaks first.

Official JMA earthquake early warnings, tsunami notices and weather alerts, relayed in seconds — rated for the ground you are standing on and explained in English, Japanese and Spanish.

See how it works
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Earthquake early warning

SHINDO knows where you stand (and what is coming).

When the Japan Meteorological Agency issues a 緊急地震速報, SHINDO relays it in about three seconds — with the intensity JMA forecasts for your own area and the arrival time, not a nationwide shout.

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Get the shaking off your mind.

SHINDO rates every event for your location — quiet, caution, serious, dangerous, evacuate — so a distant magnitude 4 never wakes you, and a real one always does.

M6.9 off the Kamchatka coast, 160 km deep. JMA observed intensity 1 in Hakodate. For Setagaya: nothing to feel, no action needed.

More personal than a nationwide siren.

SHINDO's AI explains every event in plain words — epicenter, depth, what JMA observed, tsunami status — in your language, within a minute of the report.

Let SHINDO's early warning conquer your alert fatigue.

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Introducing Nazu

Meet Nazu. He feels it before you do.

In Japanese folklore a giant catfish stirs beneath the islands. Ours glows. Nazu is a living 3D companion who swims behind your home screen — calm cyan on a quiet day, violet when he is listening, amber for a warning, red when it is real.

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Smart mind, calm voice.

SHINDO is precise enough to tell you JMA's forecast intensity for your own ward, and calm enough to say "nothing to do" when that is the truth. When a warning is cancelled, you hear that too.

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Beyond earthquakes

One app for everything Japan throws at you.

Tsunami warnings by coastal zone. JMA weather warnings for your exact municipality, across all 58 forecast offices. River flood forecasts, typhoon tracks, heatstroke index, volcanic alert levels and live radiation readings — each from its official source, each explained.

Learn more
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Railways

Know the trains stopped before you reach the platform.

After a quake, the railways pause for inspection — and the station crowds begin. SHINDO reads JR East's line status for the whole Kanto network and Tokyo's subway lines through the operators' open data, translates each notice, and pushes a transit alert when the lines you ride stop.

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Built on the sources that matter (not on guesses).

Earthquake early warnings, tsunami, weather and river forecasts, typhoon tracks and volcanic alert levels — straight from the Japan Meteorological Agency.

気象庁 · JMA

Earthquake information arrives through the P2P地震情報 relay network within seconds of JMA's release, with per-area intensity forecasts.

P2P地震情報 · relay

The heatstroke index for all 47 prefectures, issued through the day by the Ministry of the Environment.

環境省 · WBGT

Live environmental radiation from more than a thousand monitoring posts of the Nuclear Regulation Authority's RAMIS network.

原子力規制委員会 · RAMIS

JR East line status and Tokyo subway operations, read from the operators' own feeds so you know before you reach the platform.

JR East · ODPT

Forecasts, pressure, air quality and space weather from Open-Meteo and NOAA's Space Weather Prediction Center; maps from the Geospatial Information Authority of Japan.

Open-Meteo · NOAA SWPC · 国土地理院
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Finally, an earthquake app that doesn't cry wolf.

SHINDO's features
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24/7, 365. Monitoring never sleeps. Early warnings, tsunami and weather alerts are pushed in seconds, even when the app is closed.
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Lights that wake you. Link Philips Hue and your room flashes the moment a warning is issued — even when your phone is across the house.
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Three languages, one truth. English, Japanese and Spanish, including the AI explanations and every alert.
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On your Lock Screen. A Live Activity carries the forecast intensity, arrival time and any cancellation to the Dynamic Island.
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Off the grid, still in touch. SHINDO Node keeps your family messaging over LoRa radio when the networks fail.

Built in Tokyo. Tested on real earthquakes. See what changed in the latest build.

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How SHINDO works

Inside the three-second alert pipeline.
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Why a catfish?

The making of Nazu.

Field notes.

October 16, 2026

What JMA's cancelled "M9.9" warning taught us about relaying alerts

 October 9, 2026

We audited every live feed SHINDO depends on. Here is what was silently broken.

 October 5, 2026

SHINDO Node firmware 1.15: smarter relays, retries and ARIB-compliant airtime

 September 11, 2026

Nazu swims: rendering a living companion in RealityKit
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Introducing SHINDO Node

A mesh that outlives the network.

A pocket-sized LoRa radio on Japan's licence-free 920 MHz band. Pair it to SHINDO and your messages, location and SOS hop from node to node — no cell tower, no Wi-Fi, no account required.

Explore SHINDO Node
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Hardware that answers the alert.

SHINDO Node is made in our Tokyo studio. The smart lights are Philips Hue, the only system SHINDO can flash from the cloud today — bought from Amazon or Philips, linked in Settings → Smart Lights.

SHINDO

SHINDO Node

LoRa mesh radio on Japan's 920 MHz band. 技適-certified module, GPS, 18650 cell, 3D-printed enclosure. Pairs with the app over Bluetooth.

Price with first batchJoin the waitlist
SHINDO

SHINDO Node · Pair

Two nodes, pre-paired to each other. One at home, one in a bag — the smallest mesh that keeps a family talking.

Price with first batchJoin the waitlist
Philips Hue

Hue starter set · 3 colour bulbs + Bridge

Everything SHINDO needs: the Hue Bridge receives our alert from the cloud and the E26 colour bulbs flash red in the room you sleep in.

See price on AmazonAmazon.co.jp
Philips Hue

Hue colour bulb · E26, 100 W class

Add a bulb per room. 1600 lumens, 16 million colours. Needs a Hue Bridge for SHINDO's cloud trigger.

See price on AmazonAmazon.co.jp
Philips Hue

Hue White Ambiance set · 2 bulbs + Bridge

The warm-to-cool set. SHINDO flashes it at full brightness during a warning; it cannot turn red.

See price at Philipsphilips-hue.com
Philips Hue

All Hue starter kits

Compare every kit, including dimmer-switch bundles, on Philips' Japanese store. Any kit with a Bridge works with SHINDO.

See price at Philipsphilips-hue.com

Philips Hue is a trademark of Signify. SHINDO is not affiliated with Signify. As an Amazon Associate, Meta Studios earns from qualifying purchases made through the Amazon links above — the price you pay is unchanged. Prices and availability are set by the retailer.

Shipped, shipping, next.

We publish what is in the app today and what is still being built, so you never pay for a promise.

In the app

Early warning relay

JMA 緊急地震速報 relayed in seconds with the forecast intensity for your area, cancellations included, Live Activity on the Lock Screen.

In the app

Eleven hazards, one feed

Tsunami, weather warnings, rivers, typhoons, heatstroke, volcanoes, radiation, pollen, air quality, space weather, transit.

In the app

Philips Hue, Nazu, three languages

Cloud-triggered lights, a living companion, and English, Japanese and Spanish throughout.

Shipping before launch

SHINDO Node mesh

Store-and-forward messaging, SOS priority and owner-locked pairing. Hardware sales open with the first batch.

Shipping before launch

Finer early-warning zones

Your municipality mapped to JMA's sub-prefecture forecast areas, so one coast's warning never wakes the other.

Planned

Family groups, Apple Watch, Visitor mode

Live family location and safety check-ins, haptic countdowns on the wrist, and a one-time pass for travellers.

Free for everyone. Pro for the ones who want more.

Free

Always free
  • Earthquake early warnings and cancellations for your area
  • Tsunami, weather and river warnings
  • Live earthquake list, map and community reports
  • Nazu, three languages, Lock Screen Live Activity
  • Nearest evacuation sites
Get SHINDO for free.

SHINDO Pro

Pricing shown in the app · cancel any time
  • AI explanations of every earthquake, tsunami and storm, in your language
  • Philips Hue cloud trigger
  • Typhoon tracks, heatstroke, radiation, pollen, air quality and space weather
  • Transit alerts for the lines you ride
  • SHINDO Node mesh messaging
Start with the free app

FAQs

No. Keep your phone's emergency alerts (緊急速報) switched on — they are broadcast by carriers and work without any app. SHINDO complements them: it relays the same JMA warning with the intensity forecast for your own area, explains the event in your language, and can trigger your lights, your watch and your Node.

Everything SHINDO shows about an earthquake comes from the Japan Meteorological Agency. SHINDO does not predict earthquakes.

From JMA, relayed through the P2P地震情報 network. Our server in Tokyo receives each message within seconds and pushes it to your phone as a critical alert, so it sounds even in Silent and Focus modes once you allow it.

See Data sources & attribution for every feed we use.

JMA only issues an early warning when it forecasts intensity 5-lower or more somewhere in Japan; most quakes you feel are smaller than that. SHINDO always shows those in the Seismic tab and can notify you about them from your chosen threshold — set it in Settings → Notifications.

SHINDO uses your location to choose the right JMA forecast area and to rate alerts for where you are. We store an approximate position with your push token so alerts can be targeted while the app is closed; we do not keep a movement history and we never sell data. Details in the Privacy policy.

Philips Hue, linked through your Hue account so the alert reaches your bridge from our server even when your phone is asleep. Other brands are not supported yet; we will say so here the day they are.

Yes. Abroad, SHINDO switches to Watch mode: you follow Japan's earthquakes and your family's alerts quietly, without sirens. You can turn the full experience back on in Settings if you want it anyway.

Get SHINDO for free.

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1 SHINDO relays information issued by the Japan Meteorological Agency and other public bodies; it does not forecast earthquakes and is not a substitute for official emergency broadcasts. See the emergency information disclaimer.

* SHINDO Node uses the 920 MHz band under ARIB STD-T108. Hardware carries Japanese 技適 certification. Range and battery life depend on terrain and settings.

2 SHINDO Pro is a paid subscription; features and pricing are described in the app before purchase.