Use simple arithmetic operators ( + - * / )and the 4 numbers provided in any order to calculate the target number.

For example, (8 * (7 - (6 / 8)) = 50

Compete with yourself or others and see who has the fastest brain!

You may scroll the number pickers to setup the 4 numbers and the target yourself manually.

Swipe on the screen or press the RANDOM button to generate the 4 numbers and the target randomly.

Tap the screen once to stop the TIMER when you have come up with an answer!

Press the ANSWER button to obtain one possible answer.

What’s New

Version 1.1.3

* Added a "Very Hard!" level
* Updated to laest Firebase and Google AdMob

App Privacy

The developer, Synergy Technologies Limited, 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 Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

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


  • Family Sharing

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

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