lift-app/ios/Runner/AppDelegate.m

#import "AppDelegate.h"
#import "GeneratedPluginRegistrant.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application
    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    [GeneratedPluginRegistrant registerWithRegistry:self];

    FlutterViewController *controller = (FlutterViewController*)self.window.rootViewController;

    FlutterMethodChannel *versionChannel = [FlutterMethodChannel methodChannelWithName:@"version" binaryMessenger:controller];

    [versionChannel setMethodCallHandler:^(FlutterMethodCall * _Nonnull call, FlutterResult  _Nonnull result) {
          if ([call.method isEqualToString:@"jumpAppStore"]) {
               NSURL *appUrl = [NSURL URLWithString:@"http://itunes.apple.com/us/app/id1112069772"];
               [UIApplication.sharedApplication openURL:appUrl];
          }else{
               result(FlutterMethodNotImplemented);
          }
      }];

  // Override point for customization after application launch.
  return [super application:application didFinishLaunchingWithOptions:launchOptions];
}

@end