These are the websites for some really cool FREE Apps. If you're not reading this on a mobile device, you'll need to search for their apps from your device.
The Center for Food Safety offers the Guide to Avoiding Genetically Engineered Food app. Since labeling of of Genetically Modified food is not required in most places; this is not something that you'll find on the packaging (if you can read the packaging).
After you've found the 1 bag of chips at the grocery store that doesn't contain genetically engineered anything then you can look up that item on the What's In My Food app. This app will tell you all the pesticides used in the growing of your store bought food.
If the 2 apps above have you feeling hopeless you'll be appy to know that there are some fresh organic produce options near you and these apps will make finding them much more convenient than sniffing the breeze.
FarmStand is a app that will direct you to the dearest farmers market wherever you are in the world. This would be great when your traveling I suppose; because when your home you'd only need to use it once.
The Locavore app is much the same as FarmStand but it also helps you find out what food is in season, offers local seasonal recipes and includes Pick It Yourself farms and road side stands.