This is my site. I want to create an app based on my site's database.
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You need to create a native app and api.
And add a payment module.
Google Pay, paypal, mercado pago (This is Brazil's payment module. Very similar to paypal.)
My budget is a fixed $ 400.
Please bid only if you agree with my budget.
Dear Sir, Thank you for posting on freelancer. We guarantee the delivery of your project with your cost and given time. Looking forward to working with you. Warm Regards, Om Infowave