CacheFreakTim is correct. The iPad will definitely work for caching but honestly I would recommend against it especially if you plan to cache on trails or rough terrain. People get away with it on iPhone (me as well when I first started) because its smaller and you can put it in a case and in your pocket when you need to move around. With a iPad its alot harder to protect that device due to its size. One drop, contact with water, or scratch from a unseen branch and youll be very upset. Your warranty does not cover damage of that sort even if you purchase an AppleCare Protection Plan.