Climate & Nature...

Looking for a way to save money but trying to avoid using all of those annoying paper coupons?

Try CouponSherpa, a new app for the iPhone or iPod Touch that downloads coupons to your device. Once you have the coupons, you can either just show the image on your screen to the cashier or let them scan the accompanying bar code on the screen. Either way, you save money, and you avoid using any paper.

(Of course, you're still using electricity, so you have to weigh that out, but you're not generating waste around you, so that's more efficient than paper coupons.)

CouponSherpa gets your location from your iPhone or iPod, then comes up with a list of coupons for stores in your area. In my test, that "area" seemed to be pretty broad. Some of the retailers that came up don't have stores within 50 miles of me. But others will work just fine.

And tragically, there are no grocery coupons quite yet, since the coupons are from merchants, not from manufacturers. This would be a great tool for grocery shopping, but for now, that will have to wait.

“We know that paper coupons will not be completely replaced, but providing consumers and retailers with an outlet for mobile coupons is a positive start towards reducing the waste created by the mountains of mail we all receive,” said Luke Knowles, who created Coupon Sherpa with his brother Jesse Knowles. “In the future, an increasing amount of coupons will be presented on mobile devices, and that will be great for the environment.”

CouponSherpha is free until Earth Day -- just one more day! -- so download it now and see how much money and paper it can help you to save.

Do you have other favorite "green" apps for your iPhone? Share them with us here!