Your subscription can be restored on multiple devices as long as you are using the same Apple ID/Google Account and downloaded Color by Number with the same account. This way, you can avoid paying for the subscription more than once when painting on different devices!

To restore your subscription, please follow these steps:
  1. Tap on a locked image;
  2. Tap on "Already a subscriber? Restore purchase".
And that's it! Enjoy Color Unlimited on all your devices!