When you create a task, on the settings of it you choose from a list of skills you created (or this could be the tags). Like for example "guitar", "drawing", "programming", "math", etc. So then when you complete one task wich have the skill (or tag) "guitar", then on the section "skills" (on the "daily performance") the skill "guitar" would increase 1 point. And if a day pass and you did not complete one task with the skill "guitar" then that skill will lose 1 point. Subtasks would be 1 point too. Doing all the subtasks and marking as done the principal task, maybe would give 5 points more for a project completed. Something like that. And would be great if you could see also what balanced you are with your skills on a "radar chart" graphic.

I could not find a to-do app that do this, you re app is great, but with this i would use it for sure.

Thank you
Regards