Take-Air app for iPhone and iPad
With this tool you can simply calculate the liters per minute you breath during the dive. You can store the results to get a historical overview. No calculations needed. Just enter the metric values of a dive and the app does the rest. Scuba divers, especially GUE-divers, can use this app to calculate the Surface Consumption Rate (SCR) in liters per minute and the Surface Air Consumptions (SAC) in bars per minute. Both single tank and double-set configurations are supported.