Any suggestions for iOS/Android devs?

If just doing a web wrapper, there's a bunch of open source solves for that that are pretty straight forward. At that point though, can you just direct folks to use the add to home screen options to get your icon on their homescreen instead of dealing with managing the apps as well? 

would just google for a couple of the best open source ones, it’s a pretty straight forward process and then you don’t have to pay a dev just for a wrapper. 

@bfarkas @lrnlab check it out

write an application for ios using the swift programming language that displays the website https://in.leadingre.com fullscreen using WKWebView. Include all code

Here is an example of an iOS application written in Swift that displays the website "https://in.leadingre.com" fullscreen using WKWebView:

import UIKit
import WebKit

class ViewController: UIViewController, WKUIDelegate {

    var webView: WKWebView!

    override func loadView() {
        let webConfiguration = WKWebViewConfiguration()
        webView = WKWebView(frame: .zero, configuration: webConfiguration)
        webView.uiDelegate = self
        view = webView
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        let myURL = URL(string:"https://in.leadingre.com")
        let myRequest = URLRequest(url: myURL!)
        webView.load(myRequest)
    }
}

This code creates a WKWebView and sets it as the view for the view controller. The URL for the website "https://in.leadingre.com" is created and loaded into the web view in the viewDidLoad method.

write an application for ios using the swift programming language that displays the website https://in.leadingre.com fullscreen using WKWebView. If the user exits the app, save the URL they have open and record the date and time. If they reopen the app within 12 hours, open that page instead of https://in.leadingre.com upon relaunching the app. If they reopen the app after 12 hours have elapsed, load the page https://in.leadingre.com instead of the saved page upon relaunching the app. Include all code

import UIKit
import WebKit

class ViewController: UIViewController {

    var webView: WKWebView!
    let userDefaults = UserDefaults.standard
    let twelveHours: TimeInterval = 12 * 60 * 60

    override func viewDidLoad() {
        super.viewDidLoad()
        webView = WKWebView(frame: view.frame)
        view.addSubview(webView)

        if let savedURL = userDefaults.url(forKey: "SavedURL") {
            let currentDate = Date()
            if let savedDate = userDefaults.value(forKey: "SavedDate") as? Date {
                if currentDate.timeIntervalSince(savedDate) <= twelveHours {
                    webView.load(URLRequest(url: savedURL))
                    return
                }
            }
        }

        let url = URL(string: "https://in.leadingre.com")!
        webView.load(URLRequest(url: url))
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        userDefaults.set(webView.url, forKey: "SavedURL")
        userDefaults.set(Date(), forKey: "SavedDate")
    }
}

This code uses the WKWebView to display the website full-screen, and UserDefaults to save the URL and date/time when the app exits. The viewDidLoad method determines whether to load the saved URL or the default URL, based on the elapsed time since the saved date. The viewWillDisappear method saves the current URL and date/time whenever the app is exited.