Where bio.link wins
Speed and lack of decisions. There is very little to configure, which means very little to get wrong or to maintain.
If your page is three links pointing at social profiles and it will not change much, added capability is added weight.
Where Bioflow is different
The loyalty program. Customers join from your public page by scanning a QR, collect stamps at the counter, and redeem a reward — with no app to install on their side and no POS or hardware on yours.
That is the whole distinction. On the link-page side these products do broadly the same job.