Thank you everyone for all your help. I guess I phrased my exchange caches wrong. I meant the ones that have items to exchange in them. So far I have been using my laptop and google earth to help. Then just head for the area and let the kids go. Sometimes we find caches, sometime not. Just wanted to know if downloading the official app would help. On disability with kids, so really can't even afford a used GPS right now. But if the app helps get me close, will try that.
Thanks again for all your help! Good luck and Happy Hunting Everyone!