What is this icon on S8

[Android Central Question]

I have an orange circle with the letters RAM in it. Top left of phone screen, what is it and what app is it from?

 

[belodion]

Does it persist in Safe Mode?

 

[Rukbat]

It sounds like a "RAM cleaner" - something you want to uninstall. This is Android, not Windows - RAM doesn't need to be "cleaned".

 

[Stalwart9]

Ahhh that sounds like it as there's an icon with an 'ecg' heart beat in a box next to it