Build a simple Android App that uses a third party API

I need a very simple Android App created. I have access to a train API and I want to show when cancellations were over the last 7 days. I currently have a semi-working Python script that does this and I can provide you access to this as well as the API. - Simple GUI - From Station, To Station, Date and submit button - Return tickbox if journey is both ways - In between each search I would like a video ad to appear (AbMob) - Results page will show all times trains were cancelled on given day (It will tally up the minutes of the delay until the next available train and if that was cancelled, then move on to the next) -Ability to email the results over to themselves, this should be designed too. - Each query should be from the API, no database is required Any questions, please message me.