I've built an app to measure stockpile volumes. Looking for honest feedback from people in the industry.

I've been working on a side project over the past few months and have finally got it to a point where I'm comfortable sharing it. It's called Stockpile. The idea came from working around surveying, earthworks and construction, where getting accurate stockpile volumes can make a big difference to how a job is planned and priced. Whether it's aggregate, topsoil, mulch, fill or other bulk materials, estimating volumes can lead to over-ordering, unnecessary truck movements or coming up shor