If you are using any third (3rd) party payment gateway to your store then the payment gateways will not reflect directly.
We do provide FREE INTEGRATION with one payment gateway. If you are using more than one payment gateways and you want to integrate with the app. Then it will be done through customization (a paid service).
Also, Mobikul Mobile App builder supports all the major payment gateways.
To know more please feel free to contact us here – https://mobikul.com/contact/