How to strengthen the iPhone 4 gps for the geocache app?

I recently bought the geocaching app, and it has an accuracy of less than 16 ft, maximum. Is there any way to strengthen that or did I waste $10

Hi, 16ft is about right for any hand held GPS under good conditions. Using a mobile phone sometimes the accuracy isn't all that great but loads of cachers use them without any problems. I prefer to use a Garmin GPS but with a mobile (cell) phone you get the added advantage of google/bing maps. The very best accuracy on my GPS is 14ft but that is under very optimum conditions.

The accuracy of the co-ordinates is only as good as the cacher who placed the cache in the first place, so if their signal wasn't great then the co-ords may be some way out, Just use the clue if your stuck (if there's one).

If your new to caching just remember that nothing is as it seems and that caches can be very well disguised, so a long search is sometimes needed. Look for some easy caches to start on even if they are quite boring. They will gain you experence in using the app.