Is it better to write to-do lists on paper or on smartphones? In my opinion it is more efficient to write to-do list on smartphone rather than on paper notebook. There are some reasons why I think so. There are many personal organizers, notebooks and diaries which are made of paper on a market today. They are performed in different shapes and sizes, paper types and colors. They are nice outside and well-organized inside. Despite of so many positive aspects of having a paper notebook I give my preference to built-in notebook in my phone because of its cost. The average price for good notebook is 30 dollars and for a notebook on a phone is free of charge. Additionally, I noticed when I use a paper notebook I spend more time to write down things I have to do in a day. I constantly have to open it to take a look at a task, cross it out when I am done with it, and remind myself to do it over and over again during a day. Apparently, it takes more time than writing everything down on a smartphone and setting a notification for each task without getting distracted on these things. What is your choice to keep things organized?