It's no secret that ad-blocking software, well, blocks ads. Now that Apple allows ad-blockers on its mobile devices, The New York Times decided to find out what else the software does for your iPhone 6's data plan. Turns out, using a mobile ad-blocker in the Safari browser netted a 21 percent increase in battery life (that's with internet browsing only though), significantly lowered the device's data usage and often shaved seconds off loading times. This means ad-blockers can save you money, as well. For example, hitting up the Boston.com homepage every day for a month costs about $9.50 in data usage in ads alone, the study found. That's the most extreme example, since that site featured video ads front-and-center. NYT tested 50 news sites in total, including Engadget.