All tools integrated into the software. You don't need any other calc while using APACHE II Calc. - Oxygenation screen to place worst gasometry. A-a gradient will be calculated if needed. - Arterial pH or serum HCO3 in the Acid-Base Balance screen. - Integrated GCS Calc. - Chronic diseases screen with details. - APACHE II and predicted death rate (not adjusted). - Disclaimer screen shows points stored under each section to help testing. - Support Celsius and Fahrenheit degrees. - Test buttons to try different values if you don't know which ot them is worse than the others. Easy to use. All you need to calculate APACHE II score. Android greater than 2.1. Free Software without ads.