Appshopper had some sort of database meltdown a month or so ago, and it’s never quite gotten up to speed. Some new apps are missing, some updates are hours or days late, making me miss sales, and many Mac apps now erroneously say they’ve been removed from the Mac App Store.
I still use the site, but I can’t depend on it, unfortunately.
Another site I use is CheapChart.info, which also shows deals on iTunes movies as well as changes in prices of TV series, books, audiobooks and music. Here’s the Mac App page:
They have a fantastic iOS app that keeps me up to date on the iTunes movies/TV/audiobooks/music. Looks great, works great. I’ve picked up many $4.99 movie deals through the app:
I use IFTTT for this - there’s a standard applet that continually checks pricing and sends you a notification when price drops - you just need the App Store link or the name of the app (though the link works the best, in my experience).
Most apps are pretty inexpensive nowadays, particularly compared to the old days where software was hundreds of dollars. I dunno, I don’t see a need for such services.
Waiting for an app price to go down by a couple of dollars before buying is just silly IMHO. If you can afford $1K+ iPhones and iPads, you can certainly afford $6 for an app, even if you end up not using it.
It takes me about 2-3 years to save up for the next replacement of an Apple device, and only then do I get it if it’s really compelling. I wouldn’t have dreamt of getting an iPhone X but rather an 8. Every €6 count towards that.