This app uses two method to score:
shopping guide to pesticides in produce
produce that are high in pesticides
Apples, grapes, celery, spinach, sweet bell pepper, cucumber, peaches, nectarines, strawberries, cherry tomatoes, snap peas, potatoes
This is not to say you shouldn't eat your fruits and veggies! It's better to eat conventionally grown produce than not eat it at all. Our body needs the nutrients to function properly. This serves as a guide to lower your exposure to pesticides.
produce that have minimal exposure to pesticides
Avocado, pea, onion, asparagus, mango, papaya, kiwi, eggplant, grapefruit, cantaloupe, cauliflower, sweet potato
So, what does this tell us? It's better to choose organic food but if you can't there are ways to eat healthier.