No idea what this is and I don't own one (and don't plan to) -- however:
The S6 Edge which I do own also had an "Samsung exclusive" feature (the edge display) and someone asked about it back then. I investigated and found that it's really quite limited for third party apps.
---
Just Googled "Always On" -- really, Samsung should provide a user setting to display information from standard status bar notifications there, this would work without requiring every developer make changes to his/her app.
Or maybe widgets, another standard Android feature (esp. since lock screen widgets were removed in Android 5.0, this would be a good replacement).