Wow, I did not know that there were apps that showed you inventory and location - and I normally consider myself tech savvy. I’ll download the Home Depot app for my next trip and try it out.
I don’t use an app, but if you just select a store as “your store” on their website you can see if something is available.
Make sure the App is fixed to your store location. The Associate have their store phone & can check on availability of a part at another store location but you can too once you change (my store). Enjoy