These are the Magento 2 forums -- you'll want to ask your question in http://community.magento.com/t5/Core-Technology-Magento-1-x/ct-p/technology
I ll suggest Contus M Comm. It is a readymade mageno mobile app solution that lets store owners to build branded, exclusive, native mobile applications which can be in perfect sync with the online store’s backend. Please have look into it.
I have done a Mobile App for Magento Enterprise site. The best way is that you should contact Magento support: https://magento.com/company/contact-us. They will guide you or may provide Mobile app Android to work with your Magento Api site.
If you want to build mobile app for Magento website with using plugin then you can use Magento mobile app extension, which helps you to build a custom mobile app for your Magento Store easily and quickly and gives you all the flexibility without the headache of developing your application from the ground up.
Native Mobile Apps will be the best option for your Magento store to go mobile.
MageNative is one such company that will help you develop sales-boosting mobile apps.
In the Magento market now many mobile apps are available.
We suggest seeing Magento 2 mobile app for any eCommerce website and any industry like grocery, fashion, electronics, medical, cake shop, etc.
If you know about this: https://marketplace.magento.com/biztech-magemobcart-m2.html
Mobile apps are quick solution and more easy to engage with customers, There are so many mobile app development services available that convert your site to Magento app, Develop your mobile app to fulfill the needs of the customers.
Sure, there are several companies which are offering excellent services to their clients. I know a few custom software development companies which have experienced mobile app team and they charge very reasonable rates. You can check Hul Hub mobile development services from Florida.