As a contractor or builder, do you need to find the difference in elevation to maintain a proper slope? Need to build a patio and figure out the difference in height to establish that 2% slope for drainage? Are you required to build a berm at a maximum slope of 33%? This app will calculate these and hundreds of other scenarios for you. Our app works in both metric and imperial measurements. After you've used the calculator to determine the correct answer, you can email results of those calculations including an attached screen capture so you have a permanent record of your data. All data is automatically saved to app, so you will not lose your data unless you choose to select delete. The images and notes are saved with app for future reference. Notes can be emailed to you for a permanent reference and printed from your email client. Includes 4 unlimited database systems for record keeping. You can now log and track prices of goods, list your suppliers, your contacts, and your clients for future reference. This app is not ad supported and does not contain any hidden costs, no extra charges, and no in app purchases. One price with no hidden costs for any extras.