The Mac Index indexes Apple website and compare prices of Apple products in different countries, against recent currency exchange rate. It’s like The Big Mac Index of Macs (and iPhones, and iPads). Useful when you're traveling somewhere and wanted to check if they have your favorite Apple product cheaper than if you buy at home.
Amazon Price Tracker helps you to list products you want to track on a Google Sheet. It automatically updates the latest availability information and alerts when it reaches a certain price.
PriceAlert for Amazon is a simplified menu bar tool that allows you to monitor the items you would like to buy from Amazon.com and notifies you once it reaches the price you set.
Fluctuate is a great app for people that are constantly looking for the best deals online. The app will keep track of prices as they fluctuate. You can set a desired price and Fluctuate will notify you if the product drops below the threshold. All it takes is patience to find a good deal.
Pricify is a simple web application that track the prices of your favorite product and notifies you when they drop. The user can track products from any website simply by copying the url of it. Then, when the price drop he will receive a notification. What makes Pricify unique is that we use artificial intelligence to analyse the web pages.