ZITTO SYNC+ is a free utility and tool app developed by diajidong for Android devices. The app is designed to help users sync their clock to their smartphone effortlessly. The app is easy to use, and the connection process is straightforward.

To connect the app to your clock, you need to follow some instructions. First, download the app from your smartphone's app store, then enable Bluetooth on your phone. Turn on your clock by holding the round button, and the logo "ZITTO" will appear. Open the app, give permission to the required permits, and touch the icon. Then, touch the voice "Il mio ZITTO." After enabling the "Auto-Connect," the name of the watch and the Mac address will appear on the list below. Touch the name of the watch (ZITTO), and the clock and the phone will be connected. After a few moments, the time and date will be automatically updated.

You can also enter your data under the "Profile" section to have a more accurate detection of physical activity. Additionally, you can set one or more smart alarms that will activate by vibrating the clock.