Published by International Business Machines Corp.

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About Hello Quantum

1. Explore the building blocks of quantum mechanics in a series of puzzles.

2. The rules of how to play Hello Quantum are easy to pick up, yet tricky to perfect.

3. Think quantum computing is hard?

4. Maybe, maybe not, or maybe both at the same time?

5. But by mastering them, you'll be learning key behaviors in the mysterious world of quantum mechanics to progress forward.

Hello Quantum Customer Insights

1. "Agreements, disagreements" - what does it mean? So if you're a total newbie in this as me, you better resort to other resources or you'll get confused.Fun short logic puzzles game (I recommend you read the "Learn More" part first), have finished it but wouldn't say I actually learnt anything about quantom computers tbh ๐Ÿ˜…, in the sense that it could be called "move the circles around" and it would have been the same experienceHelpful for learning the basics of quantum computing.

2. Did not learn anything about quantum computing Edit: Click the well hidden "learn more" button at the bottom of the screen to read how quantum computing works, and how it relates to the puzzles you're solvingVery educational and fun application! Please add like 100+ Levels; I honestly could do this all day.

3. Didn't expected IBM to come up with something like this which even QC experts cannot relate to actual QC.Useful training tool to get your head around some simple concepts, also very fun.Thought I would learn about quantum computing.

4. I never would have expected such enjoyment out of an app by IBM.Even though the game is short, simple and easy, it is fun to play and a result you will learn about quantum qbit states and gates.

5. Maybe a free mode? With some matrix multiplication? And more gates? Or 3 qubits? I'd happily write it for youAwesome as a game but a disaster as an intro to Quantum computing.

6. They works differently than classical system from this app ibm is trying to create interest in the people's for Quantum computing that together we can explore more in it.

7. What's funny is many people gave five stars thinking they are actually learnt Quantum computing (in my eyes it's more of a sin, miss-guiding people).

8. I know a little bit of quantum computing and cannot figure out how QC relates to what's taught in the game.

9. I completed it very quickly and wanted more levels.This app is for the understanding how Quantum gates works.

10. Not for beginners that want to learn quantum mechanics basics.

11. While Playing this puzzle we can understand how Quantum gates works.

Steps to Troubleshoot & Fix Hello Quantum Issues

1. Fix Hello Quantum Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart Hello Quantum: Restarting the app will resolve most errors.
  2. Update the Hello Quantum App. Here is how:
    1. On Android goto PlayStore » Search for "Hello Quantum" » Open Hello Quantum » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for Hello Quantum » click "UPDATE".
  3. Clear Hello Quantum app cache: Clearing cached data will force your app to retrieve the latest data directly from Hello Quantum servers.
    1. On Android, goto Settings » Apps » Select "Hello Quantum" » click Storage » click "Clear Cache".
  4. Check Hello Quantum app permissions. If any of these permissions required to use your device's features are disenabled, Hello Quantum might not work.
  5. Uninstall and reinstall Hello Quantum. If nothing else has worked, completely uninstall Hello Quantum then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing Hello Quantum not working


2. Fix Hello Quantum Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make Hello Quantum be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to Hello Quantum not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, Hello Quantum may not be able to connect to the Internet when running in the background.

Reported Issues