According to various third-party APK repositories, Refresh Rate Changer 3.0 by RC Modz is a modified application designed to:
(Points deducted for ad intrusion and the inherent risk of using third-party system modifiers).
But the 3.0 update wasn't just a driver tweak. Rc Modz had written a kernel-level bypass that pushed the display panel beyond its factory limits.
Key differences you would expect to find in the "RC Modz" version include: