Improving your home’s energy efficiency is a win-win for both your wallet and the environment. But what if you can’t afford to upgrade your home appliances and systems right away? Not to worry—you can use these free and low-cost smartphone apps on home energy efficiency as stepping-stones to get started. Half Price Shutters created in an infographic that lists seven apps to help you track the energy use and save electricity. Keep reading for the full list!

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