Having a hectic and unorganized living, we sleep worse, move less, glued to our smartphones all the time. As a result, our bodies and minds suffer. However, we can make smartphones our friends here. Because one thing we usually lack is a good routine.
Using some fitness application might be a good choice. It will help track your time, diet, physical activity, unhealthy habits like sitting at the computer for hours without even stretching. Google the reviews, browse app stores, find the one which suits your personality and likes. Try a few ones before you find the one that suits you ideally.
After you get some extensive user experience, you might even think about creating your app. You can read the articles on how to create a fitness app and invest your time and resources and get the one in such a case. Think here about the uniqueness.