Hello #
The app for smart owners
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Hello # - The app for smart owners.
Take full control of your smart # car - easily, instantly, everywhere.
Digital Key
Use your iPhone to lock, unlock, and start your car effortlessly.
Stay connected
Check your car’s status, location, and key details at a glance. Customise your home screen with what matters most.
Charge on your terms
Monitor charging live, start or stop remotely, set limits, and schedule sessions.
Comfort, ready before you get in
Precondition your car and fine-tune seat heating individually.
Works seamlessly with CarPlay, Widgets, and Siri Shortcuts.
Your credentials stay safe
Your data never leave your device.
Always evolving
Regular updates bring new features and improvements, shaped by users.
more Bug Fixes & Improvements
This update focuses on stability and reliability across the app.
Enhancements:
- Charging start/stop retry and failure handling
- 12V battery now shows “- V” when the value is unavailable instead of “0 V”
- Performance improvements under the hood
Fixes:
- Model name missing in the garage for recent models (e.g. “smart #1 Brabus”)
- Electric brakes status always shown as active
- Synchronisation status hanging
- Fan animation spinning while driving
- Garage not updating properly when adding or removing vehicles
2.6.1 6 days ago
Car Sharing
Share your car with family and friends — directly from Hello #. Choose between Digital Key or Remote Access, set a time period or share indefinitely. Even vehicles without Digital Key support (including UK models) can now be shared for the first time.
Server Issue Alerts
Hello # now detects when smart's servers are having trouble and lets you know with a clear banner — no more guessing why things aren't loading.
Digital Key Reliability
Improved connection stability and reconnection handling for a smoother Digital Key experience.
Improved Login Experience
Added a help screen if you're having trouble signing in, with quick access to reset your password or create a new account.
Session Stability
More robust session management keeps you logged in reliably.
2.6 19 Mar
Hello World! Hello # is now compatible with international smart servers.
Same app. Same experience. Now worldwide.
New
- New Siri Shortcut: Open Digital Key
- New Quick Actions widget – personalise your favourite actions right on your Home Screen
- Control Centre quick actions
- "Existing Key Found" button to view detected digital keys before first setup
Improvements & Fixes
- New Danger Zone in Debug: remove all digital keys (account + local) for clean recovery
- Recovery solution for "Key doesn't match vehicle"
- Fix for users stuck in "Offline" state
2.5 21 Feb
Digital Key is here!
Unlock and start your car straight from Hello # - your phone is now your key.
Works Offline
Hello # now caches your vehicle data so the app works even without internet. Your digital key stays functional wherever you are.
Smart Account in Profile
View your smart account details directly in Hello #. The logout button has moved here too.
Dashboard Enhancements
- New unlocked status icon shows when your car is unlocked
CarPlay Improvements
- New Climate tab
- Faster refresh rate (every 15 seconds)
Other Improvements
- Added "Forgot Password?" to redesigned login screen
- Added an “In-Car Login” guidance screen
- Improved ABRP view
- Refreshed Profile and Share Feedback UI
- New language: Finnish
Bug Fixes
- Fixed intermittent login issues
- Fixed temperature slider on iOS 18
- Fixed potential crashes
- Various UI fixes and improvements
2.4 4 Feb
- Improved login reliability and error handling
- Fixed an issue where the app could stay stuck on the login screen after a successful sign-in
- CarPlay now works even if the main app hasn’t been launched
- Improved background persistence of preconditioning settings
2.3.1 10 Jan
Improvements & performance
- Faster loading times and overall performance improvements
- UI refinements, including a redesigned “Buy me a coffee” screen
smart #5 enhancements
- Fast DC charging data now available
- smart OS version displayed
- Brand-new preconditioning screen
- Includes seat ventilation when supported
- New App Shortcuts: Defrost and Charging Lid
All models
- V2L discharging status with additional vehicle details
- New debug views: Car Abilities and QRVS Data (smart #5 fast-charging related data)
2.3 4 Jan
CarPlay
- Hello # arrives on CarPlay
Climate Control
- Seat heating can now be activated without AC preconditioning by dragging the temperature slider all the way down.
- Reduced accidental temperature changes when scrolling.
- Added defrost support on #5.
- Added rear seat heating on #5.
Vehicle Details
- Removed brakes and washer fluid information (values were incorrect).
- Hid sunroof details for Smart #3.
2.2 19/12/2025
IMPROVEMENTS
• Refined iOS 26 interface with updated liquid glass visuals and a new app icon
• Redesigned login screen featuring a car image carousel
BUG FIXES
• Seat preconditioning now works correctly on smart #5
• Dashboard button animations are smoother
• Address sharing to the car now functions as expected
2.1 29/10/2025
- Dutch language added (dank je Sander)
- ABRP logs page translated to all languages
- Fix charging lid button for #5
- Fix charging lid status open/closed
- Fix charging limit display for new cars having never set it yet
2.0.1 05/08/2025
Version 2.0 of Hello # brings a major redesign, new features, and a smarter experience.
- Support for smart #5
- iOS Widgets
- Complete redesign of UI and backend handling
- Buy me a coffee
- Portuguese language
2.0 14/07/2025
- fix ABRP integration
1.4.1 13/04/2025
- fixed doors lock status
- refreshed pre-conditioning screen
- send GPS location to car from Apple Maps and Google Maps
1.4.0 10/03/2025
- Removed the 50% minimum charging limit
- Fixed ABRP updates on standby screen
- Fixed Siri Shortcut error 11 when the app has been closed for too long
- Fixed Siri Shortcut error 12 when iPhone was locked
- Increased refresh frequency for smartOS update message in the garage
- Improved token refresh
- Enhanced image caching
- Discontinued tips for new users after extensive troubleshooting efforts, to enhance app stability
- Error message improved when VPN is blocking access
Shortcut error 12 will stop happening after next login refresh (days), or immediately after re-login.
1.3.1 04/11/2024
New Features:
- Display available smartOS updates via OTA (Home and Profile views).
- Add tyre pressure details in car info.
- Siri Shortcuts: ask Siri to precondition your car (using your last saved settings), start/stop charging, or lock/unlock. Works with iPhone’s action button. Integrate Hello # actions in your own shortcuts and automations.
- New App Settings:
- Appearance override (light/dark mode)
- Units setting (pressure, temperature, distance)
- Charger icon now visible when plugged in but not charging (Home & Charge views).
- Status Watcher view moved to the top-left of the Home view.
- Charge limit now set to a minimum of 50%.
- Temperature on/off persists in Preconditioning view.
- Improved Lock view buttons animation and haptics.
Fixes:
- Corrected interior PM2.5 value.
- Fixed ABRP charging speed display (always positive).
- Resolved central locking status bug for RHD cars.
- Removed autocapitalisation on login fields.
1.3.0 08/10/2024
- Fix "remember me" feature
- Remove "token expired" error message shown by mistake
- Fix charging speed display when DC charging, now an estimate in kW
1.2.1 11/06/2024
New features
- Remember Me: no more repeated logins! Enable "Remember Me" on the login screen to securely store your credentials. Hello # will automatically log you back in when the main token expires.
- New controls: ventilate, use the horn, and activate lights directly from the Lock screen.
Fixed bugs
- ABRP Battery State of Health (SoH) now always at 100%.
- Improvements of Italian and German translations.
1.2.0 05/06/2024
- Fix issue with login when email address contains special characters
- French translation improvements
1.1.1 30/04/2024
What’s new
- A Better Route Planner integration: Accessible from the Charge screen, simply enter your generic token which you can easily generate in ABRP, and you are good to go! If you toggle on the “Update when app is running” option, Hello # will automatically send an update whenever there has been a change to the car status.
- Steering wheel heating option in the preconditioning screen.
- Italian translation.
Bug fixes and improvements
- Better image caching
- Map repositions when vehicle is moving
- Better error messages translation
1.1 28/04/2024
Bug Fixes & Improvements
This update focuses on stability and reliability across the app.
Enhancements:
- Charging start/stop retry and failure handling
- 12V battery now shows “- V” when the value is unavailable instead of “0 V”
- Performance improvements under the hood
Fixes:
- Model name missing in the garage for recent models (e.g. “smart #1 Brabus”)
- Electric brakes status always shown as active
- Synchronisation status hanging
- Fan animation spinning while driving
- Garage not updating properly when adding or removing vehicles
more Version 2.6.1 6 days ago
Data Not Collected The developer does not collect any data from this app.