Apple requires a valid certificate from every iOS developer and user which must be updated annually. Sprylab takes care of this for you, so there is no need to get yourself a certificate for your demo app. Every year our iOS certificates are updated and we will inform you by email.

If you already have an iOS demo app and receive the above error message, you only need to update the app.


After a simple four steps your demo app will be ready to use again. There is no need to delete your app currently on your device.

Your previous content and layout will not be affected.



  1. Go to Purple DS Manager ( and open your app
  2. Press "Build App"
  3. Choose the iOS platform - this will start the update of your iOS certificate
  4. As soon as the app is finished building, you can download your app and re-install. This may take a few minutes