No clear way to understand how effectively I am studying

Problem Description

I spend a lot of time studying, but I struggle to understand how productive that time actually is. I don’t know which subjects I spend the most time on, which topics I struggle with, or whether my study habits are improving over time. My current workaround is guessing based on how tired I feel or how confident I am before an exam. Some tools allow time tracking, but they require constant manual input and don’t reflect real study behavior. There is no simple way to connect time spent, topics studied, and actual learning progress in a way that is easy for students to use. This makes it hard to adjust study strategies or identify weak areas early.