Free Trial for 30 days. To cancel subscription, just go to the My Account menu and click on Cancel Subscription and follow the steps below on the Play Store. The aim is to make life easier for pilots. This app is complete. You can weight and balance your aircraft, add passengers to the list and create a PDF file that will be saved on your cell phone. - Weight and Balancing for Airplane and Helicopter This app has: 1 - Weight and Balance Sheet (With chart) 2 - Passenger List (Already included