It looks slick and has some purpose but it lacks.
The offset bend wasn't accurate. The instructions weren't even correct. If you need to bend in opposite directions then the instructions should show that.
If allows you to enter invalid numbers and then complains, but it doesn't tell you what the valid values might be, If a value isn't valid then don't let me pick it from a list.
It also needs options of how to calculate a bend. Maybe I know the distance between to connections and the offset distance. I should be allowed to enter this, have it tell me how long to cut the pipe and where to bend it at which angle. Why is it telling me my shrinkage and making me calculate my length. This is a computer program! It should be doing the math, not me.
They really need to call this version 1.0, charge $0.99 and go back to the shop and test it. Sit there with a bender and the app and let someone show them how it works in practice. I think once they see how problems present themselves and what the electrician knows in the order they know it, they could have a good app. Also, check the instructions and make sure they actually represent the solution, not just look good.