Share your experience!
Hi @elohim,
I'm afraid that if the application does not have a specific setting for this and it's compatible with the Xperia Home launcher the number will always be shown on application icon on your home screen(s).
You can always check in the Google Play store if there is another launcher that you can download that has a setting for this.
I can see how this can be a very useful setting to have so I will make sure to forward your thoughts on this as user feedback and I thank you for posting about this.
You can also join the Xperia Home open beta program and leave feedback directly to them, they will be very happy about getting feedback on this application.
https://plus.google.com/communities/111315230279215633731
Let me know if there is anything else I can assist you with! 