Every year when Earth Day rolls around, authorities tell us to turn our lights off for a few hours during the day. This year, they’re telling us to turn our phones on.

Go Organic! for Earth Day is a national collaboration between the Organic Trade Association, the Earth Day Network, and MusicMatters. These companies have joined forces to create a free new iPhone application to get us thinking about an organic and sustainable lifestyle. Customized for each owner based on zip code, the application alerts users about local Earth Day festivities like tree planting events, offers organic lifestyle tips and presents coupons for leading organic brands.

When you download the app, put the tips into action and make our world a little greener.

Want more green apps? Check out Locavore and find out what food is in season and locate farmers’ markets. And don’t miss GreenSpot, which pulls articles from reliable sources on organic farming, renewable energy, green transportation and more.