Stockroom is one HTML file. There is no installer and nothing to keep running. It needs a database to keep your parts in, and that database is yours.
stockroom.html, put your project URL and publishable key
at the top, and save.A copy you downloaded cannot update itself. It will notice when a newer version exists and say so once, quietly, in the app. It will never download anything on its own — a parts room in the middle of an invoice does not want a surprise. Come back here and download it again when it suits you.
Shops we host do not have this problem: their copy updates itself the next time it has signal.
It does not replace CCC, Mitchell or Audatex, and it does not try to. It covers the small parts and consumables that never make it into an estimate — the clips, the sealer, the abrasives — which is where a shop quietly eats money.