- The calculator includes basic functions, while the Digit Invader game replicates the old-school calculator gaming experience.
- The game state is automatically saved when the user explicitly pauses or implicitly switches to a different app, allowing them to resume later.
- A high score list is provided for users to challenge themselves.
- Compatible with Stage Manager on supported iPads, enabling multitasking while having fun occasionally.
- A special scaled-down version of Digit Invader is available for Apple Watch, allowing users to enjoy the game during exercise breaks or while waiting in line.
- Localized in Japanese.