Yes, you will be able to export your data out. We are working on this feature and it will be available shortly.
At Marrily, we understand that your data belongs to you. You will be able to export your data out anytime, even when your subscription has expired.
Once the export data feature is completed, you will be able to download your data (Contacts, Guests List, Seating Arrangement List, Todo, Checklists, and Expenses) in CSV format as a ZIP file so that you can open your data inside a spreadsheet program.
We are also working on our API so that you can programmatically access all the data as well. Essentially this is the same API that we are using for our iPhone app.