I'm following the Stanford iOS development lectures and I have a Calculator brain class which has been alloc init in a controller but I haven't released it in the dealloc.

- (CalculatorBrain *)brain
{
    if (!brain) 
        brain = [[CalculatorBrain alloc] init];

    return brain;

}

I ran from XCode -> Run with Performance Tool and the app started and no leaks appeared, I then clicked the home button in the iOS Simulator and nothing, I then double clicked the home button and closed the app and still nothing.

I also did Build & Analyse and it didnt spot anything

Could you let me know why its not picking it up?

objective-c ios xcode instruments
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