Petal Layout: Sphere, Dish Ends is an Android app developed by LetsFab. This app calculates the development required in plate or sheet metal lay-outing used for fabrication of Sphere, Hemispherical Head or Hemi Head, Dish End Petal type layout. It is recommended to use mean dimensions for lay-outing for higher accuracy and ready-to-use fabrication layouts. The app provides petal layout developments for Hemispherical Head and Sphere, with 12, 24, and 48 part layout options. It is best suited for petal type layout development of sphere or hemispherical dish ends and is used in storage tank fabrication and pressure vessel fabrication. This app is very helpful for fabrication fitters, fabrication engineers, production engineers, or any other working professional in the field of process equipment's fabrication.