What is Reddit's opinion of YouNote Free?

From 3.5 billion Reddit comments

Check out YouNote by Redditor /u/krimin_killr21

There's a free version, but the paid version is only a buck. You can customize any app notification. Very slick app too.

Here's an app for Android that does it. You'll need to use the keywords feature to distinguish contacts.

https://play.google.com/store/apps/details?id=com.turingtechnologies.youNote.free