Hot. Garbage.
Scenes that clearly need to be resolved end too early. Timelines don't line up (2005 & 2006 are separate, but then you find that the 2005 timeline was a few weeks before the 2006 one? That's just sloppy, poor storytelling). The ghost is almost never actually scary, just jump scares. Can it hurt you? Does it just make people hurt each other? Never answered.
The original US Grudge is a classic, why anyone would want to remake it as a more disjointed, less scary version is just beyond me. Don't watch this movie, if you want quality just watch the original versions.