Your silent
safety companion.
When you need help, Kai sends your current location to your contacts and calls them. Silently, offline, directly from your iPhone.
Free download. Now available.
One trigger.
Your contacts know.
You Trigger
Voice, button, timer, or fall detection
SMS + Location
Sent to your selected contacts
Auto Call
To your primary contact
Safe. Local. Immediate.
Your safety should never depend on an internet connection or someone else installing an app. Kai monitors your health, knows your surroundings, and works entirely on your device.
100% Offline
Every safety feature runs without WiFi or cellular data. Triggers, health monitoring, and fall detection all work without a connection.
No App Needed
Your contacts receive standard SMS and phone calls from your iPhone. They never need to install anything.
Completely Silent
Every trigger works without sound or vibration. Nobody nearby will notice when you ask for help.
Set up in under two minutes.
No accounts, no servers, no complexity. Just open Kai and follow the setup.
Add Your Trusted Contacts
Choose the people who should be notified when you need help. Add as many as you like.
Customize Your Safety Message
Write your personal safety SMS. Kai automatically attaches your current location via Apple Maps.
You Are Protected
Kai monitors your vitals, finds safe places nearby, and offers multiple ways to trigger help. Your contacts get alerted the moment you need them.
Designed for clarity.
Built for urgency.
Every screen in Kai is purpose-built. Quick access to your safety triggers, trusted contacts, and every feature at a glance.
Trusted Contacts
Choose who gets notified when you need help.
Hub
Your safety command center. Every trigger, one tap away.
Features
Help points, fall detection, widgets, and more.
Everything you need.
Nothing you don't.
Multiple safety modes, health monitoring, and nearby help. All deeply integrated into iOS and ready from day one.
"Hey Siri, Bravo."
Trigger your help chain with just your voice. Works from the lock screen with no setup required.
One Press. Instant Help.
Press and hold for one second. A 3 second countdown appears. Cancel or let it trigger your safety chain.
Check-In Timer
Set a duration. If you do not confirm safe when it expires, Kai alerts your contacts automatically.
Automatic Protection
Advanced 3 phase detection with activity aware intelligence. A 60 second grace period lets you cancel before Kai escalates.
Companion Mode
Always ready on your lock screen and Dynamic Island. One tap to trigger without opening the app.
Proactive Safety Signals
Intelligent notifications based on time, location, weather, vital signs, and activity. Morning briefings, night watch, health alerts, and contextual safety tips throughout your day.
Vital Signs Monitoring
Kai reads your heart rate variability from Apple Health and alerts you when your vitals look unusual. Continuous monitoring over 7 days detects trends before they become problems.
Safe Places Around You
Find police stations, hospitals, pharmacies, and support organizations near you on an interactive map. Always know where help is within reach.
A companion that truly cares.
Kai is more than a safety button. It monitors your vitals, watches your surroundings, and checks in on you throughout the day with smart, contextual signals.
- Morning safety briefings with weather and local alerts
- Heart rate variability monitoring via Apple Health
- Night watch and unknown area notifications
- Nearby help: police, hospitals, pharmacies on a map
- Post trigger follow ups and check ins
SMS + Call.
Automatic. Instant.
When a trigger fires, Kai sends an SMS with your live Apple Maps location to all your trusted contacts and calls your primary contact.
- Customizable SMS template with current location
- Automatic phone call to your primary contact
- All other contacts receive SMS with your location
- Works directly from your iPhone with no servers
On your lock screen.
In your Dynamic Island.
Kai lives where you need it most. Widgets give you one tap access. Live Activities keep your active session visible without opening the app.
- Lock screen widget for instant safety access
- Dynamic Island during active Companion Mode
- Timer countdown visible at a glance
- Home screen widget for quick access
Built for every detail.
Morning Safety Report
Start your day informed. Severe weather, unusual vital sign trends, regional safety alerts, and inactivity warnings, all in one morning notification.
Test Mode
Run a full end-to-end test. Your contacts receive a clearly marked test SMS so you can verify everything works.
Wrist to Wrist
Fall detection and health data from your Apple Watch. Vital signs, movement, and safety stay in sync across your devices.
Multi-Language Support
English, German, Spanish, French, Polish, and Russian. Your safety SMS is sent in the language you choose.
Fully Customizable
SMS templates, notification frequency, contact priorities, and Siri voice commands. Make Kai truly yours.
Built exclusively
for Apple.
A native iPhone app, deeply integrated into every part of the Apple ecosystem. No compromises.
Truly Native
Built entirely with Apple's own frameworks. No web views, no hybrid layers. Pure native performance.
HealthKit Integration
Reads heart rate variability directly from Apple Health. Detects unusual trends and alerts you before something becomes a problem.
MapKit Powered
Finds police, hospitals, and pharmacies near you using Apple Maps. Navigate to the nearest safe place with one tap.
For every moment
that matters.
Whether it is your daily commute, a night out, or simply peace of mind. Kai adapts to your life.
On Your Way Home
Activate Companion Mode for your evening commute. Kai shows nearby safe places and your contacts can be alerted with one tap from your lock screen.
Late Shifts and Nightlife
Set a Check-In Timer for your late shift or night out. If you do not check in, Kai contacts your people automatically.
Traveling Solo
Find hospitals and police nearby in unfamiliar places. Multi-language SMS templates keep your contacts informed, no matter where you are.
Active Lifestyles
Fall detection adapts to your activity level. Vital signs monitoring tracks your heart rate variability during workouts and beyond.
Peace of Mind for Loved Ones
Set up Kai for anyone you care about. Health monitoring, daily briefings, and fall detection give the whole family peace of mind.
Everyday Confidence
Kai is for everyone. Vital signs, nearby help, proactive signals. Simply knowing it is there changes how you move through the world.
Your data stays
on your device.
Kai was built with one rule: your safety data never leaves your iPhone. No cloud, no servers, no exceptions.
Zero Data Transmission
Safety data, contacts, vital signs, and location history live exclusively on your device.
Works Fully Offline
Voice commands, fall detection, health monitoring, SMS alerts, phone calls. Everything works without an internet connection.
No Account Required
No sign up, no email, no personal data collection. Install Kai, set your contacts, done.
Frequently asked questions.
How does Kai work without an internet connection?
Kai runs entirely on your iPhone. SMS alerts, phone calls, location sharing, fall detection, and voice commands all use native iOS capabilities that work offline. Your safety never depends on Wi-Fi or cellular data.
Do my contacts need to install an app?
No. When you trigger an alert, Kai sends a standard SMS with your current location and places a regular phone call. Your contacts receive help requests on any phone. No app required.
Is Kai available outside the Apple ecosystem?
Kai is available for iPhone and iPad, and works with Apple Watch for fall detection and vital signs monitoring. It is deeply integrated with iOS features like Siri, Dynamic Island, Live Activities, and HealthKit. There are no plans for Android at this time.
How is my data kept private?
All your data stays exclusively on your device. Contacts, vital signs, and location history never leave your iPhone. Kai has no cloud backend, no servers, no accounts, and no data collection.
What happens if I accidentally trigger an alert?
Kai includes a short countdown before sending alerts, giving you time to cancel if it was a false alarm.
Is Kai free?
Yes. Kai Companion is completely free to download. Set up your trusted contacts and you are protected in under two minutes.
Your safety companion
is one download away.
Silent triggers, vital signs monitoring, nearby safe places, and trusted contact alerts. Download free and set up in under two minutes.
