Fill a prescription: Scanning the barcode on an empty prescription bottle and having it instantly order a refill sure beats calling the pharmacy and slogging through an automated directory. Since mentioning this in a story last year, Walgreens ( WAG) is now joined by Rite Aid ( RAD) and CVS ( CVS). Track receipts/expenses: For any business user or even household that wants or needs to track purchases, several apps take pictures of receipts, read them and log purchases by date, amount, category and name. One of the more popular ones, Expensify , offers features like calculating mileage, scanning business cards and linking to credit cards to track purchases as they occur. What business users really love? It's a timesaver when turning in company expenses. This article is commentary by an independent contributor, separate from TheStreet's regular news coverage.