Square Developer

Easily integrate payments into your Flutter apps.

At the Flutter Live event in London, we announced a new Flutter plugin. This plugin enables the quick and easy integration of payments into Flutter apps. With billions of transactions processed, we have built strong payments expertise that Flutter developers can now rely on to build great apps.

Flutter plugin for In-App Payments SDK

Square In-App Payments SDK enables developers to take payments in a mobile app. Our interactive UX was designed for fast and accurate card entry in mobile apps and it is fully customisable so that it can match your app.

Square Developer Platform