Personal Improvement Goal/Habit Trackers - how effective they are?

I am into self-growth, but I don't really do anything...in fact, I tried countless apps that aim to help with goals/habit tracking and I gave up on day 2 or 3 for various reasons: but mainly, I just didn't get the essense of the app and the whole UI/UX was overwhelmingly confusing, it just didn't click with me.

Just wonder, if any of you ever used a personal development habit tracker sotware and if so, which one was it?

1. What prompt you to use it?
2. Are you still using it today?
3. What aspects of it did you enjoy the most, and what was off putting?

Anything else you would like to share?