The galaxy insulation app is for home builders, First of all, one needs to first sign up and then Sign in. then select the project, after selecting the project builders will upload all photo proofs of construction during construction along with location, date, and description. It is intended to help On Construction Domestic Energy Assessors (OCDEAs) understand how the photograph requirements will affect their role. the provision of more information to building control bodies and homeowners and the need for photographic evidence to improve the accuracy of energy calculations.