Available for the...
Green Roof is the second App in the Building Trade Ecofriendly Series - and lists the plants that grows on a Green Roof. Also see Live Roof App - both have a similar with a Roof Area Calculator.
Calculator for a Roof's area in square metre's and a list of plants that grow on a Green Roof. Also there is an about section for Green Roof's, while being designed for the Building Trade.
Version 2 of Green Roof - Will have different Roof types from addition and subtracted roof structures. Will be uploaded to the Apple Store later this year. As working on multi iOS structures for the UI (User Interface).