It's so annoying when you find an app from the App Store or Google Play that you want to try out, maybe it was one that you just now discovered or it was one you heard about a lot recently, or friends recommended it, only to find out that your device is not compatible and therefore cannot run the app. This problem either occurs because the operating system on your device is outdated or your hardware specs are not up to snuff. Either way it definitely is annoying; this has happened to me more times than I can count, as I have used a cheap smart Android smart phone with less than a 1ghz processor.
There shoudl still be some way to run the app; why not just make a stripped down version? Well I suppose some app creators do while others don't think it's worth the trouble since it wuold be the minority of people who cannot access their app, but like I said previously it's still quite annoying.