Speed Grid Challenge, the popular PC game from Primary Games, is now available as an app for iPad and iPhones!

Gameplay: Find two numbers in the grid which, when added or subtracted, equal the answer. Can you unlock all the levels?

Speed Grid Challenge at a glance:

- Addresses addition and subtraction skills.
- Eighteen levels of difficulty to unlock.
- 10 questions in level.
- Different questions each time.
- Engaging graphics.
- Simple tap interface.
- Best times are saved to the device for each level.
- Universal App for iPhone & iPad.

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