Cân Lúa 2.0 is a free Android app designed to assist farmers and traders in calculating the amount of rice they are weighing. The app automatically inputs data and has multiple viewing modes. It also has several useful features, such as calculating the interest on savings or loans on a monthly basis, determining percentages, calculating discounts or price increases based on percentages, and adding or subtracting time intervals. In addition, it can convert currencies from several countries in the world to Vietnamese dong and vice versa. Cân Lúa 2.0 is a great tool for anyone who works with rice, and the fact that it is free makes it even more appealing.