Users are often intimidated by heating controllers and expect them to be
confusing. And they might not have a strong enough mental model of the
system to infer that CONTINUOUS and ON are the same thing. Having tested
systems with similar issues, we found it was more important that these options
were consistently named across devices. The value of better terminology in the
mobile app is undermined if users don’t understand that the functions are the
same.
Figure 9.21: The Hive Active Heating controller is an example of a device
with fixed segment LCD labels mapped to physical buttons.
Follow platform conventions
The second priority is for each UI to be consistent to the platform conventions
of the device.
Mobile OS UI conventions are well documented in styleguides, e.g. the iOS
Human Interface Guidelines^13 and Android Design^14. There are some key
(^13)
https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/Mo
bileHIG/