The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From BMA Enterprises:
Quality service should be rewarded with a quality tip. At the same time, a sub-par dining experience should be calculated accordingly. Too often, guests will opt for a default tipping percentage, when that amount may be greater or less than appropriate. With Tips-Master, you dont need to worry about leaving the wrong amount. Tips-Master is the only tip calculator that allows you to rate your guest experience across three categories (speed of service, quality of food, attitude of server), and generates a recommended tipping amount based on your rankings.