What are the services for accepting payments in an application written in Dart+Flutter?

Question

Dart

Tell me, please, what services are there for accepting payments in an application written in Dart + Flutter?

If there is, tell me which ones, maybe someone had experience in integrating a payment system? Perhaps there are ready-made packages for connection?

Answer 1

stripe. They have a large section for developers. And there are many examples on the Internet, there are even ready-made applications (source codes), but this is already, basically, not free.