“As mobile technology use grows in our homes, we will see smarter and more efficient technology solutions appear on the market,” says Patrick Chukwura, founder of mobile software company Fine & Dandy Games. Case in point: New “battery management” apps that help you assess how much juice is left in our beloved devices and even extend battery life. Battery Go! for iPhone, for example, tells you exactly how much time you have left on your phone when you get a battery level warning -- and even calculates hypothetical scenarios, so you know if you have enough power left to, say, watch a video. Android user? Try JuiceDefender, which stealthily manages the most battery-draining components of your device.