This probably arises because the wording was designed for the OpenSprinkler and not the Pi version, intially. The robust Pi support happened afterward. It would be great if we could package the app with the interval program however the development of both of these applications is happening so rapidly it’s hard to produce a package that wouldn’t be outdated within a day. I think this is on the long term goal list just too early right now.
Also, auto updates for either are too early as major changes keep occurring.