We are planning to develop native apps for magento2 website.Currently we're using paytabs as payment method no other options for now. Here's module if you want to take a look.
Module it self using express checkout for payments. It just sending request to gateway with order details and in response rendering iframe.
How should I capture payment on apps by keeping magento between ? Like, If we use SDK for accepting payments for mobile there would be more work for API to create invoice, sending notification etc.
That's reason we think to keep magento in between while accepting payment on mobile.
What is best way for payment integration for apps ? Any suggestion,ideas will be appreciated. Thanks in advance