Nector comes with a WebSDK, which shall serve as the UI for business's customer. Every business who use Nector for rewarding is advised to use the WebSDK instead of building custom UI (WebSDK integration is a 5 minute process)
We are committed to introduce new themes in future with various configuration options.
If you wish to implement your own UI we recommend contributing to our WebSDK repository which has all the API integrations in place.