ZDNET – Lance Whitney: “Feeling pain at the pump lately? I certainly am. With war in Iran affecting oil supplies, gas prices are on the rise again. After declining over the past year, the price we pay to fuel our cars has now risen more than $1 per gallon in the US, reaching on average around $4 a gallon. In states like California, the cost has creeped up to almost $6 per gallon in certain areas. Though I can’t do much about the international crisis, I can control how much I shell out to refuel my car. And one way I do that is through a mobile app. Several apps for iOS and Android will show me a list of nearby gas stations and reveal the current cost. I also can turn to navigation apps like Google Maps and Waze to check local gas prices. Here’s a look at several such apps and how they work..”