Slice is a free app that keeps track of your online purchases, personal spending and mail tracking. The useful personal finance app accesses all of your recent online purchases so that you can get notifications of all of the sales and discounts to take advantage of on your regular purchases. You can also receive a notification if a product that you bought online was recalled for any reason. Stop second guessing whether you are waiting to receive a package that you ordered, and install Slice so that you can know where all of your packages are located at all times.