I built SodaxPay over a weekend using the SODAX SDK. It's a payment link generator. You pick a destination network and token, set an amount, add a memo if you want, and you get a link. Whoever opens that link pays with whatever crypto they hold on whatever network they're on. The recipient gets exactly what they asked for. No signups, fully non-custodial, SodaxPay never touches funds at any point.
Three surfaces make up the app. A creation page where you build the link (desktop-shaped, deliberate). A payment page the payer opens cold (often mobile, one shot at credibility). And a landing page for both audiences.
The build experience is probably more useful than the app itself for anyone here, so here's what it was actually like.
What saved the most time