Set up a web-based checkout in days, not weeks. Skip the app store fees and build direct relationships with your users, from subscriptions and upsells to bundles and win-backs. Keep your margins, your data, and your control.
a55 gives you the lowest flat rate on the internet. No hidden fees, no surprise take rates. More revenue in your pocket means more runway for your next build.
a55 gives developers full-stack control, no platform cuts, and a frictionless checkout trusted by millions.
import { A55Checkout } from '@a55/sdk';
const checkout = new A55Checkout({
apiKey: 'pk_live_...',
theme: 'auto',
});
// One-click checkout in 3 lines
checkout.mount('#checkout-container');
checkout.on('success', (txn) => {
console.log('Paid:', txn.amount);
});In a flash, developers can launch the a55 Checkout powering 80M+ shoppers. No sales calls, no red tape, just a simple setup and a clean API.
Developer quick-start
Other processors take their share. a55's flat 2.1% + $0.30 keeps your earnings intact.
a55 connects you to a massive network of logged-in shoppers -- no sign-up loops, no paid acquisition, no friction.
Embed a smooth, secure experience that looks and feels like you built it yourself. a55's checkout blends seamlessly with your UI and scales instantly.