Smarter than you since 2019

Now you can play Tic Tac Toe on your iPhone or iPod Touch for free.

In XO Challenge you will play against a Machine Learning model living in your iPhone. This ensures that your iPhone won't keep making the same moves over and over again.

XO Challenge offers a new game mode in a In-App purchase

* Times Up! game mode. You only have 1, 3 or 5 seconds to think your next move

Behind The Scenes

XO Challenge was born during the time I was writing a serie of articles about Core ML and Create ML, part of Apple technologies related to Machine Learning (aka ML).

Would be possible that a ML model "learn" to play an simple strategy game and even defeat a human player?

Well, the answer is a download far from you.


The articles serie...

Thanks to UCI to mantain one of the best ML models repository. The model used in this app could be found at...

Dua, D. and Graff, C. (2019). UCI Machine Learning Repository []. Irvine, CA: University of California, School of Information and Computer Science.

App Privacy

The developer, Adolfo Vera Blasco, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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