Programmatically detect if app is being run on device or simulator

Check if simulator

#if TARGET_IPHONE_SIMULATOR
// Simulator
#endif

Check if device

#if !(TARGET_IPHONE_SIMULATOR)
// Device
#endif

Check for both

#if TARGET_IPHONE_SIMULATOR
// Simulator
#else
// Device
#endif

Please note that you should not ifdef on TARGET_IPHONE_SIMULATOR because it will always be defined to either 1 or 0.

#if TARGET_OS_SIMULATOR

//Simulator

#else

// Device

#endif

Pls refer this previous SO question also What #defines are set up by Xcode when compiling for iPhone

I created a macro in which you can specify which actions you want to perform inside parentheses and these actions will only be performed if the device is being simulated.

#define SIM(x) if ([[[UIDevice currentDevice].model lowercaseString] rangeOfString:@"simulator"].location != NSNotFound){x;}

This is used like this:

SIM(NSLog(@"This will only be logged if the device is simulated"));

TARGET_IPHONE_SIMULATOR is defined on the device (but defined to false). and defined as below

#if TARGET_IPHONE_SIMULATOR
NSString * const DeviceMode = @"Simulator";
#else
NSString * const DeviceMode = @"Device";
#endif

Just use DeviceMode to know between device and simulator