Rounding to Loadable Weights
5/3/1 sets are percentages of your Training Max, so the exact math often gives an ugly number like 173.75 lb — which no plate set can build.
The app rounds each weight to the nearest weight you can actually load from your plates (usually the nearest 5 lb, or 2.5 kg). That's why your sets land on clean numbers like 175 instead of 173.75.
A pound or two either way changes nothing about the training effect. Don't chase the exact decimal — load the rounded number and lift.