It's an easy game, isn't it?

It's an easy game, isn't it?

Well, maybe not. 1A2B is an old number guessing game. Despite its old age, it is not as easy as it may seem.

This Mac app provides the traditional gaming experience of 1A2B, challenging you to get the number right in 18 steps.

Are you confident in yourself? Or do you think you are smarter than this old game? Get it and give it a try just now!

What’s New

Version 1.1.1

Minor bug fixes.

App Privacy

The developer, Yu-Sung Hsu, 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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