Concrete Components Calculator

Am a civil engineer majorly dealing with structural design. I want someone who can create for me a mobile app that can calculate the individual components of concrete once I key just the volume required. I have been looking for this app but I haven't found one and I do a lot quotations and I hope this will make my work and the work of others like me easier. It should also include the formulas for calculating the volumes of common shapes as a rectangular or circular slab.