I don't have the problem!
I kept my iThings on iOS7, for a variety of reasons (mostly to do with a need to run a couple of software items that Apple doesn't approve of). That seems to have been a good decision, based on the reports and complaints from friends who've moved to iOS8.
However, the App Store "Update" function no longer works with anything as old as the v 7.0.4 that I have. The only disadvantage is the steadily increasing red number against the App Store on the face of the device.
Once every couple of weeks, I connect to iTunes and update the apps I reckon I need to update.