I tried several other weight tracking apps, but none comes close in terms of ease to use and actually helping you understand your progress despite the normal weight fluctuations you have in a daily basis. Calculating the "real weight", which I suspect is nothing more than a moving average, gives you great understanding of your weight loss or gain trend. The calculation of an equivalent calories deficit or superavit is also excellent, for it gives you a tangible connection between you habits (eating or exercising) and weight change. It could include a BMI calculator, but I believe the improvement would be marginal on this excellently designed app.
amteixeira about True Weight