Need to calculate an eGFR, determine a Kt/V, or calculate peritoneal dialysis (PD) adequacy? A new “Calculate” app can help! The app provides a vast number of calculations and decision trees within the field of nephrology as well as other specialty areas, including cardiology, emergency medicine, endocrinology, and more. The app is an excellent tool for use by the bedside nurse. It supports a variety of nephrology areas, including PD, chronic kidney disease, acute kidney injury, fluid and electrolytes, hemodialyisis, and transplant.