To export the entire plan on other device, navigate to the plans screen (where you see thumbnails of all plans on your device), and tap the little arrow pointing down that is at the bottom right of the plan. Tap Share and select either email or Dropbox.
Now you can import the plan into TapGlance app on other device.
From Dropbox: by tapping "Add Plan" and "Import from Dropbox".
From Mail app: just open mail with attached plan and tap Open in TapGlance.