Hello,
I've gone through the description. As mentioned you need app designer,I would be happy to help you on this.I have been designing and developing portals and apps for more than 10 Years now.
Skill set:
Html5,SASS,CSS3,joomla,bootstraphtml,LESSframework,SASS,jquery mobile html, Java-Script and responsive designs html, Mail chimp, WordPress,Magento.
It would be great if you could initiate a chat so that, we can discuss the requirements and start working on it please.
Looking forward to hear from you.
Best,
Amit Sharma