[Objective-C] Icon with symbol of the beta version

// Icon with symbol of the beta version instead of the number of badges.
// The first thing to note is that the method uses a private API
// so you don't want the code included in your App Store build.
// You can use conditional compilation to achieve this.
// original post from @sgaw
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
#ifdef DEBUG
    [[UIApplication sharedApplication] performSelector:@selector(setApplicationBadgeString:) withObject:@"β"];


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