Llama. Android. Free. One thing that Android can accomplish over iPhone is automation. One of the first apps I downloaded onto my Droid was Llama. Llama allows you to locate via cell mast towers and set profiles based on your locations. In other words, if Llama determines that I am at work, it can drop down my ringer volume, turn on vibrate or use different ring tones. You can adjust profiles so that certain calls always come through, or toggle tons of other actions. Turn on bluetooth, start music when a headset is connected, turn on or off apps or settings, and create events based on a variety of conditions. Llama does not use GPS, so its effectiveness depends on the number of cell masts nearby. Nonetheless, even in my fairly remote area, Llama knows I am home and can reset my ringer to normal with ease. Why not let your smartphone carry some of the weight? With Llama, you can set it and forget it.