I have had problems with Appery where source code files show as having been changed, even though they were not directly edited. Any changes to the actual screens are not reflected in the source files (html) and therefore not available in the app. Rolling back source code changes simply has no effect at all. This kind of problem makes Appery a difficult and unreliable platform to work with - 40% of time is spent trying to find out why Appery is not working.