Ok for 99 cents, but application is a bit clunky. The generic dose calculator is okay, but the drug specific one is a bit buggy. The app continuously reverts units to ml/min for drug rate calculations which is very annoying as most pumps are programmed in ml/hr. It also defaults dose calculations to mcg/kg/min which is not always appropriate. It would be smarter if each drug has a appropriate default unit. For drugs, common standard concentrations are offered, but doesnt remember the last one you use. It always reverts to the top of the list of concentrations.