The 1.0 version of imWebPageChecker for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free software for Mac OS X is an intellectual property of Romanysoft LAB.
From the developer:
imWebPageChecker is an app for monitoring web pages and notifying when they change. The program installs as a small icon in your Mac's upper bar, so that you can access it with ease. You can enable the tool to launch automatically at system's start up and to check for changes at custom time intervals.