Can a form be completed at a later time?

Yes, this is possible. We have two methods for both classic and card layouts:

1. Autofill which is browser-based.

https://www.jotform.com/help/227-How-to-Enable-Auto-Fill-on-Forms 

2. Session URL which is server-based which means you can continue later using any device/browser.

https://www.jotform.com/help/97-How-to-Save-Forms-and-Continue-Later 

For card forms, you can enable Autofill and choose Autofill or Session method: