Screen test

Great. I downloaded this to check for burn in on my oneplus 7 pro. It has way more stuff than that though. Perfect. Learned some new stuff about my phone. This is one of the few that doesn't require a ton of android permissions or throw ads everywhere. If your looking for a test get this one...no ads, no bloat. Just does what it says. Period.

Great app. Programmatically drawn grids and charts mean you can guarantee a true pixel accurate test of your device. Navigation is intuitive and there are many categories of useful tests. Great app to have in the toolkit.

Does exactly what it says it does. However, the tools to adjust the screen values don't seem to exist in Oreo on an S9. If I'm wrong, someone let me know.