Will my App and timer ever be out of sync?

Each time a mobile device communicates with a Rain Bird timer, the mobile application will query the timer for all of its most up to date settings and display those in the mobile application. When the app is closed by pressing “Done,” any changes made in the app are saved to the timer. If changes are made at the timer while the mobile application is open, the next time the app is opened the timer changes will be reflected in the app.