Used to be great...

...but recently they started limiting use to one device.
I have four iPhones (in a trickle-down arrangement 6s-plus, 6plus, 5s, 4), one for each country I regularly travel to, plus an iPad Air.
I expect when I buy an app that it and all in-app purchases work on all my devices, but instead I get now errors claiming I exceed the number of devices. Used to be no issue, now the app is unusable. Would give it zero stars for this, particularly changing the way things work after people bought the app! Apple should stop these sort of things, totally counter the spirit of the AppStore scheme of doing things.

Nai-De about CoPilot GPS Navigation