>I was investigating the last couple of days and found that apps like Foursquare were intended to act like this on iOS 7, even if the user force closing the app if the app use location awareness then location services for that app will remain on.
I think any app that keeps the GPS on 100% of the time is acting up. Find My Friends is always updating my position but it doesn't keep the GPS on 100%. Reminders using Geo Fencing and it isn't keeping the GPS on 100% of the time, etc.
The location should be checked intermittantly, not constantly. My guess (just a guess) is that due to the bug that is now fixed app devs were trying to get around it be constantly re-enabling the GPS (or trying to). So, you probably need to report the issue to the app devs to fix their app now that the iOS bug is fixed.
It would be nice to get a list of apps that keep the GPS on 100% of the time so people are aware and can report the apps.
Google Search certainly is one.
I will add IFTTT app to the list.
I have removed both from my phone. I sometimes used the Google Search, but not often. when they report it fixed I will re-install it.
IFTTT I only had on my phone to auto sync my new pics to Facebook and flicker, but now both of those apps do it automatically anyway, so I don't need IFTTT on my phone any more.