AdvancedRoof is the ultimate IPhone App for calculating all your roofing materials including Slate, Tiles, Plain Tiles, Felt, Battens and nails. The program caters for Hip roof, Gable roof, Lean to roof and 6 different combinations of Valley, Hip and Gables. Each roof section can have 3 different entries allowing for 21 different Roof Slopes which covers multiple roof configurations.