You can sync your contacts/cards between ScanBizCards app/devices; however, as of now, this functionality is limited to the same platform.
This means if you are using your ScanBizCards app on an iOS device, you may sync your contacts/cards only with another iOS device. In this case, you’ll need to sync your device with iCloud.
The same applies to the Android version of the app; wherein you need to sync your device with Google Drive.
To sync between iOS devices and Android devices, please refer to our FAQ: How will I backup my contacts?: