Think of it as a whole Vitruvian Training System: you have the machine, and the software; they work together as one.
The Vitruvian App contains your training profile, it has all of your personal best stats.
The app feeds this training data to your machine, and runs sophisticated algorithms to generate the weight using motors and drives.
The algorithms are high speed at 50hz, adjusting the weight about 50 times per second based on your movement pattern. This means you can select a training mode that acts like a spotter, helping lighten the weight if you ever get to a sticky spot in your lift.
It is very smooth as humans can’t typically notice more than 10 to 20 adjustments per second.