A Tool To Train Your Internal Sense Of Time

I built a tool and am looking for honest feedback. I realized that sometimes I can be bad at estimating how long tasks take. Things I think will take 10 minutes often take double that or more.
So I built a small tool for myself, meant to help train my ability to estimate how long tasks will take.
The idea is simple:

Estimate how long a task will take,

Run a timer while doing it,

Record whether you were accurate, early, or needed more time.

Over time it shows how calibrated your time estimation is.
The goal is to train your internal sense of time and improve planning accuracy.
It stores everything locally in the browser and I tried to make it easy to use, so I hope its good but again looking for constructive criticism and feedback. Here is the tool for anyone who wants to try it:
https://past-checklist-443508.framer.app/

I'm wondering if the concept is clear, if its something that you would come back to, and how much struggle is out there for estimating time.