The stock register method
The simplest system is a physical or digital stock register — one row per item. For each item you record opening stock, what came in, what went out, and the closing balance. Done consistently, this answers the two questions that matter most: how much do I have, and how fast is it moving?
- One line per item, kept in a fixed order so it's quick to find.
- Update the register every time stock is received.
- Reconcile the count physically at a regular interval — weekly works for most shops.
A spreadsheet that flags reorders
A spreadsheet adds automation a paper register can't. Set up columns for item name, opening stock, stock in, stock out, closing stock, and reorder level. A simple formula keeps closing stock current:
Closing stock = opening + stock in − stock out
Then use conditional formatting to turn the closing-stock cell red when it drops below the reorder level. Now your sheet tells you what to reorder at a glance, with no software purchase.
Set reorder levels that prevent stockouts
A register only prevents stockouts if each item has a reorder level. Calculate it from how fast the item sells and how long your supplier takes:
Reorder level = average daily sale × lead time + buffer
Set these once for your important items and revisit them when demand or supplier timing changes. This is the same logic an app automates — there's no magic to it, just discipline.
Make it a routine, not a project
Manual tracking fails for one reason: it isn't kept up. The fix is to attach updates to events that already happen — log stock when a delivery arrives, reconcile counts on a quiet day each week. A register updated inconsistently is worse than useless, because it gives false confidence. A register updated reliably is genuinely powerful.
Where the manual method breaks down
Registers and spreadsheets have real limits. They live on one device or one book, so only one person can update them well. Formulas break when rows are inserted. There's no stock check on the shop floor without walking to the computer. And nothing reminds you a reorder is due — you have to look. These cracks widen as the shop grows.
When to move to an app
The signal to upgrade is friction, not ambition. When the spreadsheet starts producing errors, when more than one person handles stock, or when you need to check and update inventory while standing at the shelf — a phone-first tool earns its place.
is being built to take over exactly where the spreadsheet stops: quick capture on a phone, reorder signals from real usage, and a shared record that stays accurate without manual formula upkeep.