I am the owner of a retail cigar store. I have googled and searched for the best apps to use for retail business. I have read about a bumnch but I was wondering if anyone has experience with any that they could recommended. I am looking for a few different things. One to use as a cash register/credit card machine and also one to keep track of inventory. I would generally like to do everything through my iPad.

Any and all input would be appreciated.