Does this app work on Windows 7?
Yes, the application supports Windows 7. I've installed it on Windows 7 and Windows 10 and it works just fine. You can download the installer from the official website because it appears that the developers are in the business as well.
Use the following link: http://www.pcfaster.com/en/lp/wifiPopularize.php?from=nav
Note: If you don't have a WiFi card, the software will give errors.