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iOS & Android App for the Crownstone.


The Crownstone iOS and Android apps have the following functionality:

Functionality State Firmware State Smartphone Apps
Switching Done Done
Instantaneous power consumption Done Done
Reacting on close proximity (tap-to-toggle) Done Done
Reacting on moderate proximity (presence) Done Done
Reacting on room-level indoor positioning Done Done
User-controlled upload of data to the cloud Done Done
Sending commands through the internet Done Done
Visualizing other users in the app Done Done
Scheduling Done Done
Wake-up light To be done To be done
Dimming (synced PWM at 100Hz) To be done To be done
Power consumption history To be done To be done
Integration with Toon To be done To be done
Device identification To be done To be done
Control by non-registered guest users To be done To be done
Integration with thermostat radiator valves To be done To be done
Multi-user setup (don't leave user in the dark) To be done To be done

The Android development is always a few weeks behind the iOS development, especially with respect to the graphical user interface.

The application makes use of separate libraries (so-called bluenet libraries) that are native to the platform. This is on purpose so that people can be make use of the Crownstone libraries without the need to use React Native. See below for getting the libraries.

Issues and feature requests

Do you encounter some issues or would you like to see a particular feature, file them directly at our Github issues tracker.


The compiled app can be downloaded from Crownstone.


React Native

Make copies of ./js/LocalConfig.template.js and ./sentrySettings.template.js and rename them to ./js/LocalConfig.js and ./sentrySettings.js.

Assuming you've already installed npm, nodejs and yarn. You can get Yarn here:

  • nodejs
  • Yarn, can be obtained at
  • Carthage (for iOS)
  • Android Studio (for Android)

Make sure typescript 2.2 or higher is installed using:

npm install -g typescript

To download all dependencies, use Yarn:


To run the compiler, use:

tsc --watch


npm start


In the ios folder, use Carthage to download the dependencies.

carthage bootstrap --platform iOS --no-use-binaries


  • Clone the bluenet lib for android to another dir, and copy the bluenet module to the android dir of the app:

      cd ..
      git clone
      cp -r bluenet-android-lib/bluenet CrownstoneApp/android
      cd CrownstoneApp
  • Import the project in Android Studio

      File > New > Import Project ...

    Choose the android dir.


  • Start the react server in a seperate terminal:

      react-native start
  • Reverse the port (only needs to be done once after plugging in the phone):

      adb reverse tcp:8081 tcp:8081
  • Press the play button in android studio


Running yarn (or anything else) may confuse android studio. If gradle fails, try closing android studio, run, and import the project again.


Run the tests:

npm test

Run react-native

react-native run-ios

or (untested):

react-native run-android


If there are problems with PHC folders during iOS compilation, remove the build folder in the ios map. Cameraroll has to be manually added to iosbuild in 0.42

If you get a lot of these messages in the XCode console:


Add this global variable to your build config:

Xcode menu -> Product -> Edit Scheme...
Environment Variables -> Add -> Name: "OS_ACTIVITY_MODE", Value:"disable"

If you get errors with xcode 11:

Unknown argument type 'attribute' in method -[RCTAppState getCurrentAppState:error:]. Extend RCTConvert to support this type.

That means you need to update the React Native version to 59.9

If you get a compilation issues in xcode 10, "config.h not found" copy the from /node_modules/react-native/scripts to /node_modules/react-native/thirdParty/glog and run the script. Clean and rebuild

If you get libfishhook.a is missing, go to RTCWebSocket and re-add the libfishhook.a in the link binary with libraries panel.

react-transform-hmr errors: run this to start the server --> react-native start --reset-cache

If you get "Argument list too long: recursive header expansion failed at <user_path_to_app>/node_modules/react-native-camera/ios/../../../ios/build/Index/DataStore/v5/records/R4.", remove the $(SRCROOT)/../../../ios from the Framework Search Path of the react-native-camera library xcode project.


The copyrights (2014-2017) belongs to the team of Crownstone B.V. and are provided under an noncontagious open-source license:

  • Authors: Alex de Mulder, Bart van Vliet
  • Date: 1 Apr. 2016
  • Triple-licensed: LGPL v3+, Apache, MIT
  • Crownstone B.V.,
  • Rotterdam, The Netherlands