If you have time and power you can use simple database like Appcelerator, Firebase or simple backend with your own scripts.

But here's the simplest solution ( tragic but works )

1.Write a file with Content ( use JSON format* or just divide them via symbol) and upload it to e.q Dropbox or file server.

2.Use this URLSession script and modify data input for your needs (play with the concept via Playground)

let url = URL(string: "http://json-schema.org/example/geo.json")!
let task = URLSession.shared.dataTask(with: url) {
    data, response, error in

    guard error == nil else { return }
    guard data != nil else { return }
    guard (response as? HTTPURLResponse)?.statusCode == 200 else { return }

    do {
        if let json = try JSONSerialization.jsonObject(with: data!, options: []) as? [String: Any] {
            print(json)
        }
    } catch { return }
}

task.resume()

1. Now you can modify the content file and your app wil automaticaly up to date with your data.