Three Free, Green iPhone Apps

If you're wondering where the nearest fair-trade grocery shop is, there's an app for that. Looking for pointers on low-impact vacations? There's an app for that. And if you'd like to save money shopping without wasting paper by cutting coupons, there's an app for that too. Best of all, you can get these three iPhone apps for free during this week's Earth Day promotions:

1. 3rdWhale Mobile: Use GPS to locate the greenest stores in more than 100 cities across U.S. The interactive service tells you where to find the closest bike shop or vegan restaurant, then lets you rate 'em on a 1-to-3 "Whale scale."

2. Green Living Guide: Sign up before April 26 to snag Fox Mobile Distribution's guide to all things green. Have tips sent to you about simple, eco-friendly actions that make a difference, like switching off your phone's energy-intensive vibrate mode.

3. Coupon Sherpa: Put down the scissors and eliminate all that paper waste with this app that loads discounts for 120 national brand-name stores. Just run a search, pull up the coupon, and show it to the check-out person for instant, digital savings.

--Jordana Fyne