Is cranberry pomegranate juice is good for kidney disease?

No : There's no data on cranberry pomegranate juice effects for kidney disease. In fact, in late stage kidney disease, it can be harmful. If you have diabetes mellitus, it can definitely cause blood sugar problems.

Fruit juice: There are no direct data to say yes or no. Cranberry extract does help recurrent UTI by reducing bacterial adhesion to ureter and bladder. Ponegranate can reduce renin angiotensin presence, and this can reduce BP a bit but can elevate potassium in blood. Both juices contain anti-oxidants, and anti-oxidants are beneficial for kidney disease. However, potassium retention is the larger concern.