Actually I have recently as of the last 2 workouts begun to bring my cellphone with me during my workouts, because I just discovered and downloaded an app that I use to log my lifts as opposed to carrying around a pen and paper, which is what I used to do. The app logs my progress and uploads it to a profile on a website where there is a big calendar and everything where I can schedule my workouts, and the website will analyze my workouts
and provide graphs and pie charts to demonstrate my progress over time. Not sure what other phones the app is available on, but I have it for my Windows Phone 8 on my Nokia.
www.bodybuildingnotebook.com
Check it out, free app, free to register. You can pay to get more of the fancy features, but logging my progress on there is so much more convenient now compared to the pen and paper logging I did for years.