Why inventory tracking slips in the first place
Inventory tracking rarely fails because the business picked the wrong tool. It fails because updates get skipped during a busy shift, and a skipped update compounds: the next count doesn't match, so the next order is wrong, so a customer gets told something is in stock when it isn't.
Before choosing a method, get honest about how many products you carry and how many people touch stock. A single owner with 30 SKUs and a spreadsheet is a different problem than three staff members handling deliveries and sales across two shifts, the second setup needs a system that updates in real time, not at end of day.
Manual tracking: notebook and spreadsheet methods
A paper log works for very low SKU counts and infrequent counting, jot the product, quantity, and date each time stock moves. It has no learning curve and costs nothing, but it can't be searched, can't flag low stock, and only one person can update it at a time.
A spreadsheet (Google Sheets or Excel) is the next step up: one row per product with columns for on-hand quantity, reorder point, and last-counted date. Use SUM formulas to catch data entry mistakes and conditional formatting to highlight anything under its reorder point at a glance.
- Columns to include: SKU, product name, quantity on hand, reorder point, unit cost, supplier, last counted date
- Update the sheet the same day stock moves, not at the end of the week, backlogged updates are where counts drift
- Lock or protect formula cells if more than one person edits the sheet, so a typo does not overwrite a total
- Do a full physical count monthly, and spot-check your fastest-selling items weekly
The point where manual tracking stops working
Manual methods break down for predictable reasons: more than one person needs to update stock at the same time, product count climbs past roughly 50-100 SKUs, you sell across more than one channel (in-store plus online), or you've had a stockout or overstock that cost real money in the last quarter.
None of those are a sign you did it wrong, they're a sign the business outgrew the tool. At that point the fix isn't a more complicated spreadsheet, it's software built to do the one thing a spreadsheet can't: update in real time from more than one place at once.
App-based tracking: what actually changes
An inventory app replaces manual entry with barcode scanning, so a sale or delivery updates stock counts instantly instead of waiting for someone to open a spreadsheet later. Low-stock alerts flag reorders automatically, and every team member sees the same live numbers instead of whoever has the file open.
You don't need warehouse-grade software to get this. StockFlow's free plan covers barcode scanning, low-stock alerts, and real-time counts for small catalogs, no credit card required, so you can try app-based tracking before deciding it's worth paying for.
- Barcode scanning: scan in receiving, scan out on sale, no manual quantity typing
- Low-stock alerts: get notified at your reorder point instead of noticing an empty shelf
- Real-time sync: everyone on the team sees the same count, updated the moment it changes
- Sales and purchase history: see what actually sells before you decide what to reorder
Ready to stop updating a spreadsheet by hand?
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