X² Challenge

The Language of Math

Free · Designed for iPad. Not verified for macOS.

X-Squared Challenge is a revolutionary new math game that is challenging and entertaining and, best of all, significantly improves basic math skills of anyone who plays. X-Squared Challenge is a math app that challenges players to build equations — not just solve them. Using integers, operators, parentheses, and exponents, players construct expressions that equal a target number while following the order of operations (PEMDAS). This application contains two game types: Basic and Classic. The Basic version is for players to practice the Order of Operations with relatively simple math puzzles. The Classic version is challenging and entertaining and enables users to accumulate points by solving puzzles of varying difficulty. This game is unique in that it requires creative reasoning — players must "create" equations rather than simply solve them. Most of all, the game promotes enhanced learning for students and others in practicing their understanding of the order of operations and math facts. Anyone who plays the game, regardless of their current level of mathematics, will improve their basic math skills. By playing the game for just one hour, players will see an immediate improvement in math skills. The X-Squared Challenge game was derived from a patented product called the X-Squared Math Card Deck, produced by Cognitive Card Games LLC. That order of operations deck is the only one available in the world to the public that has two important characteristics: it's both simple and complete. The elements of the card deck are easy to use and understand in creating equations that conform to the rules of the order of operations. It is complete in that it includes all of the elements of the order of operations (PEMDAS): it has parentheses cards, exponent cards, multiplication cards, division cards, addition cards and subtraction cards. The parentheses and exponent cards are transparent so that they can overlay integer cards. The X-Squared Challenge app incorporates all of the characteristics of the card deck.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

• Fixed an issue where users playing as Guest could not switch to a registered account without restarting the app • Classic mode now prompts for login before level selection, making the flow clearer • Added a logout button to all screens for easy account switching • Improved icon and splash screen display

Version 1.1.0

The developer, Cognitive Card Games LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Identifiers
    • Other Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Cognitive Card Games LLC
Size
  • 30.6 MB
Category
  • Education
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPad
    Requires iPadOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
Languages
  • English
Age Rating
4+
Copyright
  • © 2026 Cognitive Card Games LLC
  • Developer Website
  • Privacy Policy