Honest about the overlap
For routing traffic from a bio to several destinations, there is not much between these products. Anyone claiming a dramatic gap on that axis is selling something.
Pick on the details that matter to you: how the page looks, how the analytics read, whether the free tier covers your link count.
Where the products actually diverge
Loyalty. Bioflow's stamp cards are for businesses where the same customer comes back — cafés, salons, barbershops — and that is not what a creator link aggregator is built for.
If you are a creator, that capability is not a reason to switch.