I want to create a native app in iOS/android using the magento 2.1.2 web application. Is there any way to achieve this?
Yes, Contus M Comm give a native solution for Magento 2.1.2. It is a one stop solution to build a complete eCommerce app for your online store. It is engineered as a readymade solution that can be deployed instantly to create a full-fledged market ready eCommerce app.
I will suggest you to go with MageNative Mobile app Builder which provides a Mobile solution for E-Commerce merchandisers to create a fully Customizable Native App and enhance their businesses.
If you want to best Native iOS/Android App then I will suggest you MageMob App Builder. It is a mobile app extension that helps you build a custom app around your business logic. Give your users enhanced customer experience by providing the necessary information in their regional languages. Also, it comes with Multi-language functionality and also supports RTL.
If want more detail visit website: https://www.appjetty.com/magento-magemob-app-builder.htm