It can be a great tool too. I think anyone who discounts smartphones as just another &quot;consumption device&quot; are missing part of the usefulness of the network.<p>I use my phone in place of paper logs for calorie counting and training. It&#x27;s definitely been a solid replacement. It&#x27;s probably shaved an hour a day off the odious task of counting calories, and having internet access means that I&#x27;m only a few touches away from form pointers and useful advice. I could replace it all but I&#x27;d have to start carrying about 40 pounds of books around instead.