I read your project description carefully. I'm very interested in your job.
I have developed many native and hybrid apps and the apps can be found on appstore and playstore.
Relevant Skills and Experience
mobile development, Android, iOS, iPad, Mobile Phone, PHP, Java, JS, node.js, angularjs, Frontend, Backend
Proposed Milestones
$50000 USD - full
Could you give me a requirement document for your digital signage platform?