Hello, I can integrate payment gateway to your React Native Android and IOS apps as per your requirements. I am React Native developer with loads of working experience with integration of payment gateways and I am absolutely sure that I can do the project very well. What payment gateway do you want to use for your apps?
Lets have a quick chat to discuss further.
I have extensive experience in designing and development of Websites, Mobile Applications, Management Systems and E-commerce or Online Stores Solutions.
Kindly have a look at my Portfolio and Client's reviews via this link,
https://www.freelancer.com/u/junkyfunky
Thanks,
Faizan A.