Great app ! Thank you ! It works exactly as advertised. I use it to monitor new movies or tv shows coming out on a variety of sites, so I set the frequency checks for 12hours or 24 hours, but that's very customizable in the app's options. And I end up using it as a bookmark reference for that specific theme, since it's much easier to check tose site's url than it would be to open a browser and look at bookmarks (yes, there are LOTS opf bookmarks app out there, but I just don't like any of them much among the free ones).
Other pluses: very stable, uses very few resources, allows one to have a rather long list of websites (I was worried about upscaling but so far so good !), and to adjust the 'sensitivity' of the changes required before alerting you.
The GUI is simple, clean and self explanatory. Also each site has a checkbox allowing the user to exclude some temporarily.
My only wish: that the websites could be organized by group or themes e.g Movie websites, News websites, Mac software reviews websites etc. I found a workaround simply by launching several copies of the program at the same time: one for each thematic list of sites. No glitches so far, but it's clearly not an elegant solution and not up-scalable either if only because it multiplies the resources used needlessly and also it eats up all the space in my menu bar.
Ah also it would be great if the list of website could easily be exported e.g. as a list of bookmarks or even as plain text. The only way to recover all the sites quickly so far is to print or capture into a .pdf with a res that makes it hard to read. Of course it wouldn't be too hard to write a script iterating thru the list to copy and paste into text edit, but the whole point of this app is to be easy to use for anybody without any programming skills ...
Anyway thanks again for this great and useful little app !