Published by aboard on Oct 20, 2023

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Why should I report an Issue with KoAbacus - Mental Arithmetic?

  1. AppContacter will directly Email your issue/feedback to an apps's customer service once you report an issue and with lots of issues reported, companies will definitely listen to you.
  2. Pulling issues faced by users like you is a good way to draw attention of aboard to your problem using the strength of crowds.
  3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.
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About KoAbacus - Mental Arithmetic

1. The abacus is a calculating tool that was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants, traders and clerks in Asia, Africa, and elsewhere.

2. KoAbacus 1. 0.

KoAbacus Customer Insights

1. Great for addition.

Steps to Troubleshoot & Fix KoAbacus Issues

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


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


2. Fix KoAbacus Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make KoAbacus 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 KoAbacus not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, KoAbacus may not be able to connect to the Internet when running in the background.

Reported Issues