I don’t have much time so excuse my brevity, but:

I love the idea. It’s simple, it’s solves a user problem. You can explain it in 1-2 sentences. Setup = adding your number to the contact book.

Tips/ideas:

Consider adding a CTA pointing to a .VCF file so people can “install” your app with 2 clicks.

Consider changing the design/bg photo a bit so the copy is more visible.

Q: Could you share any details regarding your stack (tech or services)?

I was thinking about building a slightly similar tool, but as a site where you could drag and drop a photo and then pay with Apple Pay. I think I like text more though.