I have had a look on your reference app. It's clear to me your requirement and I can do this project in an excellent manner.
Well. I would prefer you to develop it in Native if you want best performance of the app. For the Native Android, we will use Android-SDK and for the iOS, we will use Cocos2d.
Please let me know your insights for the same.
I have been working since 5+ years in this industry and have extensive experience in Native Android/iOS App Developer. I have extensive experience in building high quality mobile apps and a broad working knowledge of enterprise mobile technologies. I can develop and launch the app for both iOS and Android platforms simultaneously. I am intimately familiar with iOS design patterns and coding conventions as well as Apple’s Human Interface Guidelines and App Store Review Guidelines.
I'll be responsible for your complete project. I have the ability to do your project from scratch to finish. I am well versed in user-friendly design, performance improvement, documenting code, re-factoring, continuous integration and deployment, and unit testing.
I am Professional experience designing digital experiences for mobile, Adobe Photoshop and Illustrator skills, solid understanding of HTML & CSS, Secondary UX skills in interaction design, Design user-flows, information architecture, personas, wire-frames and visuals, Front-End development, drawing, animation, or video, create and implement style guides and design standards.
Best,
Vipin