What is the minimum iOS version required for Cubasis? The App Store says 5.1 but the Steinberg website says 6.0.1
Always trust the minimum iOS version from App Store IMO. What is stated there is tested. Always check which devices that are supported!
It also runs on 5.1 (according to my iPad).
To get the best results please use 6.0.1.
Does this mean that there are limitations with iOS 5.1? If so, what are they?
Not limitations, but the official QA tests were done using iOS 6.0.1 so we only officially support iOS 6.0.1 as the product page at www.steinberg.net/cubasis says.