The short answer is no, they don't.

Spreadsheet owners can share their data and contributors can submit input in 3 different formats:

If you request input via Layer Sheets, you will share any part of your spreadsheet through Layer's built-in web interface, and your contributors will be able to edit and submit their changes directly within the browser, without the need for any extra software or tools.

layersheets-vid
Did this answer your question?