In recent time, the spread of obesity and being overweight has been worldwide significant and is considered as one of the major public health issue. By observing present scenario the researchers have try to resolve them by introducing some methods like calorie measurement system. Therefore by measuring the calories we can keep our health good and fit. Using technology for fruit recognition and estimation of its calories is very useful to spread food culture and awareness among people in the age of obesity due to the bad habits of food consumption and wide range of inappropriate food products. Researchers have been working on developing a reliable image based system for fruit recognition and calories estimation. The system consists of six phases: input fruit photo, photo conversions, photo fragmentation, texture analysis, classification, counting the calorie. Dissimilar approaches have tackled the system from different features. This paper reviews the state of the art of this interesting application.