Food classification & calories display
You might have seen the app where you type the food item name and the app will show you the micro-nutrients in it like Calories, Carbs, Fats, Proteins etc.
This app is a demo to show by just clicking a picture of the food item you will get to know the calories, carbs etc.
This classifier is running on the phone so internet is not must and of-course its fast.
I have used tensorflow by google to train this classifier and tflite to optimize model which can inference on mobile without internet.