Where Milkshake wins
Mobile-first authoring. If you never sit at a computer, building and editing from the phone is a genuine advantage rather than a compromise.
The card format also suits people whose page is about presenting something visually, not routing clicks.
Where Bioflow is different
Loyalty. A stamp card your customers join from the same page, scanned from your own phone at the counter.
For a café or a salon, that is the difference between a page that describes the business and a page that brings people back to it.