The Construction Master 5 calculator for your Android smartphone is built with the same features and functions, and the same core engine that powers the industry-standard advanced construction-math calculators from Calculated Industries. And while perhaps obvious, if you change from an Android device to an iPhone or iPad, you WILL need to buy a new license as they are incompatible. No learning curve. just one powerful, easy-to-use calculator app, for Carpenters, Builders & More. Save time with solutions for Contractors, Builders, Carpenters, Architects, Engineers, Tradespersons and Advanced Do-It-Yourselfers. You get ALL of the functionality of the handheld Construction Master 5 calculator. Calculate tough construction-math problems and reduce errors on the jobsite or in the office. Reduce costly errors and save time and money. It will help you and your crew on every phase of your projects -- estimating, bidding and building. FEATURES: Created by Calculated Industries, the originator of the award-winning Construction Master calculators. All the functionality and solutions of the handheld Construction Master 5 and optimized for the Android smartphone user. Built-in help - just press and hold the desired key for full, clear definitions, explanations and examples of keystrokes. Powerful built-in solutions make it ideal to calculate layouts, plans, bids and estimates. Work in and convert between all building dimensional formats: feet-inch-fractions, inch fraction, yards, decimal feet (10ths, 100ths), decimal inches and metric (m, cm, mm). Built-in right angle functions simplify square-ups, rafters, slopes and more. Calculate Areas and VolumesDimensional Math and Conversions. Feet-Inch-Fraction, Inch Fraction, Yards. Decimal Feet (10ths, 100ths), Decimal Inches. Preset Fraction Conversions (1/2" through 1/64"). Full Metric Conversions Function (m, cm, mm) Right Angle Solutions.complete Right Angle/Rafter Calculations. Pitch Key (Slope and Grade). Calculate Rise, Run, Diagonal/Common Rafters. Hip/Valley Key. Jack Rafters Key. Irregular Hip/Valley Rafters and Jack Rafters. Stair Layout Key for easy stair calculations. Diagonal Key. Expanded Rake-Wall Area and Volume Solutions. Square and Cubic. Basic Circular Calculations. Weight per Volume Conversions Special Functions. Calculate Board Feet. User-Definable Preferences. Haptic Feedback (optional). Entry Editing Backspace Key - with a swipe of a finger. Cost per Unit (Total costs based on unit price). Paperless Tape. Memory functionIdeal for Contractors, Builders, Carpenters, Architects, Engineers, Tradespersons and Advanced Do-It-Yourselfers.