The app for your smart #
Take full control of your smart # car, easily, instantly, everywhere.
Supports smart #1 · smart #3 · smart #5
Everything your smart # needs.
Built for iPhone and Android. Fast, focused, and respectful of your data.
Digital Key
Lock, unlock, and drive your smart # from your phone over Bluetooth, where smart offers it for your car.
Key Sharing
Share secure access with family or friends, with unlock or remote control rights.
Multi-Car Garage
Manage more than one smart # from a single app. Switch cars in a tap.
Charging Control
Live monitor, remote start and stop, charge limits, and scheduled sessions.
Comfort Ready
Preconditioning, individual seat heating, and defrost before you get in.
Private by Design
Hello # has no server. Your data stays private on your device.
At home on every device.
Hello # uses the features that make your phone great, from widgets to your watch.
iPhone, iPad, Mac & Android
Available on all your Apple devices, and now on Android phones too.
Widgets
Home Screen widgets on iPhone and Android, plus Lock Screen widgets, Control Centre and Action button controls on iPhone.
Apple Watch & Wear OS
Your smart # at a glance, right on your wrist. On Apple Watch, Hello # even carries your key.
Foldable screens
Two panes on the fold of iPhone Duo, and layouts that adapt to Android foldables, folded or open.
CarPlay
Your car's status on the dashboard, including battery level and charging state.
Siri & Shortcuts
A dozen Siri Shortcuts, ready for voice commands and your own automations.
Hello # 3.0: your smart, your way.
A new look, and a lot more that's yours to arrange.
- ✓ Pin up to three details in the header, touch and hold to customise
- ✓ Resize and rearrange your buttons in the Key tab
- ✓ Range map and search
- ✓ New Home Screen and Lock Screen widgets, including two cars
- ✓ Ten Control Centre controls, ready for the Action button
- ✓ Three ready-made recipes for Shortcuts
- ✓ Apple Watch: choose which car it shows
- ✓ iPhone Duo and iPad: two panes on the fold, a readable column on iPad
- ✓ Every command now waits for the car to confirm
Designed for your daily drive.
Made for iPhone Duo, open or closed.
Your key, on your phone.
Lock, unlock, ventilate, pop the frunk, flash the lights. No extra hardware, no compromises on security.
- ✓ Bluetooth proximity controls, straight from your pocket
- ✓ Keys encrypted and stored in the iOS Keychain or Android Keystore
- ✓ Share access with family and friends in a few taps
Support the journey
If you find Hello # useful, consider giving us a little boost. Developers run on coffee, and your support helps keep the app alive and evolving.
Built with the community.
Over 200 beta testers help shape Hello #. Regular updates bring new features and improvements, driven by what users actually need.
Want to join the beta, or help translate the app into your language? Hello # already ships in 8 languages and we welcome more.
Get in touch →