Cool Offline device

I am working for a advertising company and tagged to lot of content providers and broadcast to mobile app using own tablets mostly used in hotels...

We have a customer at other country also want a same but required some kind of device like ( Mac mini) which can pull data from our main server and storage the data locally.

Next this device will broadcast the data to the users own handset by using our android app.

The device will work as a Hotspot and when user mobile connect to it, they were able to view the contents..

Question here.... can a andriod app receive data from our main server and store locally and then allow to broadcast the data to users own mobile phone through our android app

I might not be clear on my working.. Do ask me question to clarify...