title: Inter-App Data Migration (migrating data to new app version)
body: <p>I currently have a Swift iOS app on Apple's App Store. I have many users and I would like to make a new version and help current users migrate to the new version. FYI: the new version is an Ionic app.</p>
  
  <p>Data-wise, my app is using Core Data without any iCloud or sync support. It contains JSON data and also multiple images. So I'd need to bundle the current data and find a way of bringing it to the new ionic app version.</p>
  
  <p>Basically my question is: Is there a way of writing in the app's documents directory and let the new version grab that file to import its data? Is there a way of letting both apps transmit data other than AirDrop or Custom URLs?</p>
  
  <p>I don't want to upload the data remotely, I'd like to do this all locally on the device and also seamlessly so the user don't have to manually do anything.</p>
  
  <p>Suggestions are welcome, thanks!</p>