Looking for help/quote for small coffee franchise app

I am wanting an app made for a small coffee franchise and wondering what the initial cost would be just to have it made. I would like it to resemble the Starbucks app. I am working with a someone who has more details on exactly what the app would consist of, but we wanted to get a ball park figure. If anyone has any information on this, that would be great.

What platform are you looking at? iOS, Android, etc?

Is that with or without the mobile payments infrastructure?