- The calculator itself functions in the usual manner.
- When the application is launched, Recommended App information is downloaded. Press "Done" to proceed.
- Touch the Invader in the upper right corner to toggle between color and monochrome displays.
- The musical note in the upper left corner toggles sound effects on and off.
- The application launch may be delayed in areas where network access is unavailable or when 3G Wi-Fi signals are weak.
- UFOs appear when certain numbers appear in the calculator display.
- UFOs appear with results of 50, 100, 150, etc., and special Space Invaders-related numbers. See if you can uncover them all!
- Game sound effects are played when the sound is toggled on. Use care when using the calculator in meetings or other serious settings.