This is a good problem to solve. Not sure what efforts did you put in to find the target audience, we have had good results so far in building a solution for similar problem focused on IT Infrastructure.
Wish you luck in your future endeavors.
Thanks. We're putting some effort into creating an inventory management system for Square users. https://shopventory.com if you're interested in just checking it out.
And to be completely honest, as my post mentioned, our day jobs were more important at the time so we tried to find the target audience but not hard enough.