Can we talk about those cheap fitness trackers from the mall kiosk

I bought one for 20 bucks last year and thought it was fine, just counted steps. But my friend got a proper one for her birthday and we compared them on a walk. Hers tracked heart rate and showed a map of our route, mine just said we went 1.2 miles. I realized the cheap one was basically just a pedometer with a screen. Has anyone else tried comparing a budget tracker to a real one?