1. Post-it notes
I'll start with the most popular note taking application ever: the post-it note + a pen. Prerequisite: knowing how to write. Beyond that, learning curve = zero.Now, lets see how that compares to the electronic versions...
This blog describes the experiences of someone who switched from an iPhone to an Android phone. I blog about the OS, the service, the good and the bad. As a software engineer, expect this to be scathing and occasionally insightful.
Android has a really cool, very detailed battery life indicator. As a software engineer, I have no idea how it is even possible to do this, so I question the accuracy. Charting CPU use is just not enough to really do this.