Support (Killer Sudoku)

To report a bug, ask a question, or make a request, please contact us using the method below.

How to contact us

Email: [email protected]

Including the following information helps us respond faster:

  • Your device (e.g. iPhone 14) and iOS version
  • The app version (visible in the Settings screen)
  • What happened, and steps to reproduce it

Frequently Asked Questions

What is a cage sum?

It is the total of the digits in the cells inside a thick-bordered "cage". Digits never repeat inside a cage, so use that rule together with the sum.

Can I remove the ads?

You can hide ads by purchasing "Remove Ads" from the Settings screen. If you get a new device, you can restore your purchase from "Restore Purchase."

Sometimes a puzzle doesn't generate

In rare cases, generation can take longer depending on your device's current load. If this doesn't resolve itself, please contact us using the address above.