Sortly is a general-purpose inventory app, and a well-liked one: folders, photos, QR and barcode labels, low-stock alerts, offline mobile access, and a free plan to start. Plenty of storage and logistics operators start there because it is quick and cheap.
The limit shows up when the inventory belongs to someone else. Sortly has no concept of a client who owns an item. There is no client portal, no invoicing, no recurring storage billing, and no payment collection. So the operator ends up with Sortly for the shelf, a spreadsheet for who owns what, an accounting tool for invoices, and email for the question every client asks: where is my thing and when can I have it?
Stowley collapses those into one record. Every item belongs to a client. The client logs in to a portal that shows only their items, submits pull, delivery, and inbound requests, and pays invoices. Storage fees bill on a schedule and auto-charge via Stripe. Condition reports and proof of delivery live on the item. The shelf is still tracked with QR labels and a phone camera; it just stops being the only thing that is.