I tried googling for the software also searched on Google Play store, but the results I am getting are complex software about team management or Gnatt charts which look complex to use. I googled 'project management', 'time management', 'project planner' etc, but I am not getting what I want. I don't want to collaborate with teams, I just want to see how much time I am taking for programming tasks at hand. Something like this but much simpler.
I am looking for software or a website or an android app where I can create a task say for e.g.
complete the code from client X
and then until I complete the task I should see in the program that the task is incomplete and when the task is complete I should have the function to mark it as complete. The software should then show me how much time or days was spent doing that task.