As you enter your weight every day, Argus Health will plot the data on a graph so you can easily see how you're doing. It also graphs a line which shows your average weight over time to make the correlation even clearer.
Many users have mentioned that while the screen is off the app missed recording most of the steps (50-70% of the steps were missed). Obviously this isn't great, as it provides an inaccurate step or drains your battery by keeping the screen on continuously.
To track your calories, the app suggests you take a picture of your food. However, this must be done as you log it (you can't log a saved picture - you need to take a picture from within the app for it to work).