"nendo×elecom UO clock" is digital clock app for Android OS, also is able to use as Clock Live Wallpaper on the smartphone. This app will appear as digital clock on home screen, thus fishes form digital clock time. Then, fishes swim around home screen to show new time when time change. Home screen will be as if it is fish tank when fishes freely swim around to form new time. Fishes will be healing when they freely swim around home screen. Display position is able to choose, and also able to choose automatic setting. Time will be displayed at available area of home screen if it is chose automatic setting. Fishes will not swim on precise position at beginning, but fishes have learning ability; therefore they will precisely swim around home screen if user keeps using this app more and more.