Some people find being berated and yelled at to be the motivation they need to get in shape, and this phone app by Brian Mueller does just that. When opening the app, a voice will say, "Greetings, chubby human, I, Carrot, am your new fitness overlord."
To use the app, a person will input their height, current weight, and the weight they want to be. The "fitness overlord" will then guide the person through their weight loss. If the person loses weight, then the app and the person live a peaceful and encouraging co-existence. If the person gains weight, Carrot will start calling the person things such as "meatbag" and "chubby human," and will say phrases like "progress is disturbing."