Hi ,
I have read your description , and can do it easily .
I have developed some similar android app before .
My Android App with web service (sending GET and POST requests to server and response to user ) is placed on play store , i can show you that app also .
I use JSON Parsing for this type of apps .
And I will make your app with high quality , i will also use Material Design for designing of your app as i have experience in it also .
Please Contact me and tell me more about your project .I can start working right now .